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Eugenio Ferrara

'Mystery' of why penguins can't fly is solved: Their wings are better at swimming - 'an... - 0 views

www.dailymail.co.uk/...swimming--bird-excel-both.html

penguins

shared by Eugenio Ferrara on 03 Nov 14 - No Cached
  • 'Mystery' of why penguins can't fly is solved: Their wings are better at swimming - 'and no bird can excel at both'
  • Eugenio Ferrara on 03 Nov 14
     
    Mystery' of why penguins can't fly is solved: Their wings are better at swimming - 'and no bird can excel at both'
garza6544

How are rainbows made? - 0 views

faculty.cord.edu/...genamahlen.html

sky Info

shared by garza6544 on 03 Dec 14 - No Cached
  • The birth of each rainbow begins with millions of tiny rain droplets.  The rain droplets serve as a type of reflector of light.  White light enters one individual rain droplet and exits as one specific color of the spectrum.  Without millions of rain droplets, a rainbow would not occur.  If you only had a few rain droplets you would only see a few colors.  This is typically why rainbow appear after a rain storm
  • Each rain droplet has a function in the formation of the rainbow. Sunlight enters the rain droplet at a specific angle and the rain droplet separates the white light into many different colors.  This angle is a fixed measurement between your eye
  • and the sun.  What color is refracted depends upon the critical angle,                   which is the angle the sunlight strikes the back of the rain droplet.  Red light bends the least, exiting the rain droplet at a 42 degree angle, while Violet light bends the most, exiting the rain droplet at a 40 degree angle.  All of the other colors of the rainbow exit the rain droplets at some angle between 40 and 42 degrees, thus making up the colors of the rainbow ROYGBIV, this order never changes.
  • ...6 more annotations...
  • Each rain droplet reflects all colors at a given point and time, but only one color comes back to your eye, requiring million of rain droplets to create a rainbow.  As the rain droplets fall through the sky, the colors of the spectrum being reflected and refracted are constantly changing.
  • The perfect time and place to look for a rainbow you need bright sunlight to your back and rain clouds off in the distance in the direction of your shadow. If it is later than 4:30 in the afternoon or earlier than 8:30 in the morning at these condition there is a very good chance you will be able to see a rainbow in the sky.  Other places you may see rainbows formed are fountains, in the ocean as the waves crash against the rock which create a mist in the air, waterfalls, sprinklers and mist from a garden hose. Always remember to have the sun at your back to see a rainbow, happy rainbow hunting!!!!!!
  • Rainbows form a complete circle, however only half is visible.  The horizon only  Picture from the web site of the Department of Physics and Astronomy, Arizona State University                                                             allows us to see half of the rainbow circle, so we see just an arc.  What causes the rainbow to have a circular formation is the way that rain droplets fall.  The rain droplets do not fall is flat sheet, however they tend to fall at various distances and speeds.  On some occasions you can see a full circle around a garden hose.
    • garza6544
      garza6544 on 03 Dec 14
       
      each rainbow is made by millions of rain droplets. the rain droplets make a reflect of light and it makes different colors. While light comes in a specific Droplet then it makes a specific color. Without milions and milions of rain droplets the rainbow cant be formed. If you only have a few rain droplets then you will only see a few colors. This is the reason why they happen after a rain storm.
  • function
    • garza6544
      garza6544 on 03 Dec 14
       
      Each rain droplet that rains  is always useful to make a rainbow because every rainbow needs to do something different to make a rainbow. The rain droplets separates the light into different colors.
garzat5774

How birds fly | Sciencelearn Hub - 0 views

sciencelearn.org.nz/...How-birds-fly

birds

shared by garzat5774 on 03 Dec 14 - No Cached
  • Birds have many physical features, besides wings, that work together to enable them to fly. They need lightweight, streamlined, rigid structures for flight. The four forces of flight – weight, lift, drag and thrust – affect the flight of birds.
  • Flying birds have: lightweight, smooth feathers – this reduces the forces of weight and drag a beak, instead of heavy, bony jaws and teeth – this reduces the force of weight an enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust light bones – a bird’s bones are basically hollow with air sacs and thin, tiny cross pieces to make bones stronger – this reduces the force of weight a rigid skeleton to provide firm attachments for powerful flight muscles – this helps with the force of thrust a streamlined body – this helps reduce the force of drag wings – these enable the force of lift.
  • WingsThe shape of a bird’s wing is important for producing lift. The increased speed over a curved, larger wing area creates a longer path of air. This means the air is moving more quickly over the top surface of the wing, reducing air pressure on the top of the wing and creating lift. Also, the angle of the wing (tilted) deflects air downwards, causing a reaction force in the opposite direction and creating lift.Larger wings produce greater lift than smaller wings. So smaller-winged birds (and planes) need to fly faster to maintain the same lift as those with larger wings.Wing loading tells you how fast a bird or plane must fly to be able to maintain lift: wing loading = weight/wing area (kilograms per square metre).A smaller wing loading number means the bird/plane can fly more slowly while still maintaining lift and is more manoeuvrable.
  • ...7 more annotations...
  • GlidingWhen a bird is gliding, it doesn’t have to do any work. The wings are held out to the side of the body and do not flap. As the wings move through the air, they are held at a slight angle, which deflects the air downwards and causes a reaction in the opposite direction, which is lift. But there is also drag (air resistance) on the bird’s body, so every now and then, the bird has to tilt forward and go into a slight dive so that it can maintain forward speed.
  • SoaringSoaring flight is a special kind of glide in which the bird flies in a rising air current (called a thermal). Because the air is rising, the bird can maintain its height relative to the ground. The albatross uses this type of soaring to support its multi-year voyages at sea.
  • FlappingBirds’ wings flap with an up-and-down motion. This propels them forward. The entire wingspan has to be at the right angle of attack, which means the wings have to twist (and do so automatically) with each downward stroke to keep aligned with the direction of travel.
  • Birds obtain thrust by using their strong muscles and flapping their wings. Some birds may use gravity (for example, jumping from a tree) to give them forward thrust for flight. Others may use a running take-off from the ground.
  • Different birds have different adaptive features to meet their flight needs: Some birds are small and can manipulate their wings and tail to manoeuvre easily, such as the fantail (pīwakawaka). The hawk, with its large wingspan, is capable of speed and soaring. Gannets and seabirds are streamlined to dive at high speeds into the ocean for fish. Godwits, although small, are equipped to fly long distances.
    • garzat5774
      garzat5774 on 03 Dec 14
       
      birds have some chacteristics that help them fly, birds are light weighted they have light feathers insted of heavy ones that add more weight to their bodys, they also have a beak insted of jaws that also add weight to their boddys, thay have hollow bones in their body that means that the bone has nothing inside it
    • garzat5774
      garzat5774 on 03 Dec 14
       
      birds get ready to fly by flapping their wings, some birds use "gravity" to take of some run and they jump just like an airplane and others jump from a tree and then start flapping their winds
Nany Rocha

Stanford research: The meaningful life is a road worth traveling - 2 views

news.stanford.edu/...ningful-happy-life-010114.html

happiness meaning research

shared by Nany Rocha on 06 Nov 14 - No Cached
  • One can find meaning in life and be unhappy at the same time. Aaker points out that this type of life has received less attention in the media, which has recently focused on how to cultivate the happy life.  Examples of highly meaningful, but not necessarily happy, lives may include nursing, social work or even activism. The unhappy but meaningful life involves difficult undertakings and can be characterized by stress, struggle and challenges. However, while sometimes unhappy in the moment, these people – connected to a larger sense of purpose and value – make positive contributions to society. Happiness without meaning is characterized by a relatively shallow and often self-oriented life, in which things go well, needs and desires are easily satisfied, and difficult or taxing entanglements are avoided, the report noted. And so, the meaningful life guides actions from the past through the present to the future, giving one a sense of direction. It offers ways to value good and bad alike, and gives us justifications for our aspirations. From achieving our goals to regarding ourselves in a positive light, a life of meaningfulness is considerably different than mere happiness. "People have strong inner desires that shape their lives with purpose and focus – qualities that ultimately make for a uniquely human experience," said Aaker.
    • Nany Rocha
      Nany Rocha on 07 Nov 14
       
      Happiness comes from having stuff only if you think about happiness like that. Happiness actually comes from not being stressed and trying to be with your family.
    • Nany Rocha
      Nany Rocha on 07 Nov 14
       
      People think that happiness comes from having phones,toys,etc.but thats the problem,Thanks to other peoples blogs and myths people think that the only way to be happy is from having stuff,and from having the "Happiness stuff" comes being "Buried alive".
    • Nany Rocha
      Nany Rocha on 07 Nov 14
       
      Being happy is not about having stuff,its about being with your family,Happiness is the best thing that can happen to anybody.Happiness is kind of the meaning of life,it gives us a meaning of what to do and when to do it.Happiness gives us a path to life,happiness is when you are with your family,happiness helps us understand that we can do better than what we already do.Happiness as you know doesn't come from having stuff,
    • morales5853
      morales5853 on 07 Nov 14
       
      no
    • Nany Rocha
      Nany Rocha on 07 Nov 14
       
      Happiness is also known as a goal of life.It represents us as who we are. Happiness shows on our face.It makes other people see our pride sometimes other people feel our pride so much that they show their pride,and the happiness influence goes and goes until at some point it stops.nI clearly think that if it wasn't for happiness,pride and making our goals (Not soccer goals) we would still be cavemen and cavewomen because without them we would be terrible we would feel stupid we would feel so dum that not even Benjamin Franklin would've created the light because he probably would've felt stupid. So thats why being happy is important because without happiness we wouldn't have accomplished anything.And look at us now we already went to the moon we made a tv we made a telephone and now we have iphones.it all happened thanks to our 1 and greatest feeling:Happiness.
    • Nany Rocha
      Nany Rocha on 10 Nov 14
       
      Sometimes people feel sad and depressed so they go to the mall and go buy clothes and other items,then they claim to be relaxed and happy but Jennifer Aaker proved that its not true.In fact she proved that there are lots of ways to be happy but only 1 way is the most true hearted : Social work and also being with your family.But you cant be happy by just standing besides your family,you would have to be social with them.
  • A Stanford research project explored the key differences between lives of happiness and meaningfulness. While the two are similar, dramatic differences exist – and one should not underestimate the power of meaningfulness. "The quest for meaning is a key part of what makes us human," the researchers concluded.
    • Nany Rocha
      Nany Rocha on 07 Nov 14
       
      A Stanford research project explored the key differences between lives of happiness and meaningfulness. While the two are similar, dramatic differences exist - and one should not underestimate the power of meaningfulness. "The quest for meaning is a key part of what makes us human," the researchers concluded. BY CLIFTON B. PARKER Social psychologist Jennifer Aaker studies happiness and meaningfulness in life. While lives of meaningfulness and happiness overlap, they are distinctly different, according to Stanford research. But not everybody understands that happiness comes from within not from having or buying stuff. 50% of the world population (Not counting the babies) thinks that the more stuff they got or get the happier they'll be!But of course that we the "smart" population think otherwise. Social psychologist Jennifer Aaker has studied her whole life everything about happiness and she taught us that happiness comes from within happiness comes from smiling everyday from being social with friends or family.Happiness doesn't come from having stuff not at all!! Happiness is the greatest gift of all,happiness isnt just a feeling,happiness is a friendly shadow that follows you everywhere only if you let it.
    • Nany Rocha
      Nany Rocha on 07 Nov 14
       
      The Stanford research project of Jennifer Aaker explains how to get happiness and why it is important.But now I realize that not everybody understands that happiness comes from within not from having or buying stuff. 50% of the world population (Not counting the babies) thinks that the more stuff they got or get the happier they'll be!But of course that we the "smart" population think otherwise. Social psychologist Jennifer Aaker has studied her whole life everything about happiness and she taught us that happiness comes from within happiness comes from smiling everyday from being social with friends or family.Happiness doesn't come from having stuff not at all!! Happiness is the greatest gift of all,happiness isn't just a feeling,happiness is a friendly shadow that follows you everywhere only if you let it.When I say that happiness is a shadow following you only if you let it its because this days happiness is a complete shadow.Not everybody is happy and someday we might never feel happiness ever again,But while I get off topic you should think : "Wow,I should listen to her.I should be grateful for what I already have, instead of getting more stuff." Because the more you think about it the more you understand that happiness is our path to life.that happiness is our friend happiness is our heart that keeps us alive.Thats why we smile thats why we cry thats why we love laugh and live. Without happiness we would be grumpier than the grumpiest cat.We should think more about being grateful than thinking of what to buy to be happy.
  • Nany Rocha on 06 Nov 14
     
    A bit boring but i hope its helpful!
  • morales5853 on 07 Nov 14
     
    A bit boring but i hope its helpful!
garza6544

This Is How Cats See the World | WIRED - 0 views

www.wired.com/...cats-eye-view

cats world wired

shared by garza6544 on 04 Nov 14 - No Cached
  • For starters, cats’ visual fields are broader than ours, spanning roughly 200 degrees instead of 180 degrees, and their visual acuity isn’t as good. So, the things humans can sharply resolve at distances of 100-200 feet look blurry to cats, which can see these objects at distances of up to 20 feet. That might not sound so great, but there’s a trade-off: Because of the various photoreceptors parked in cats’ retinas, they kick our asses at seeing in dim light. Instead of the color-resolving, detail-loving cone cells that populate the center of human retinas, cats (and dogs) have many more rod cells, which excel in dim light and are responsible for night-vision capability. The rod cells also refresh more quickly, which lets cats pick up very rapid movements — like, for example, the quickly shifting path a marauding laser dot might trace. Lastly, cats see colors differently than we do, which is why the cat-versions of these images look less vibrant than the people-versions. Scientists used to think cats were dichromats — able to only see two colors — but they’re not, exactly. While feline photoreceptors are most sensitive to wavelengths in the blue-violet and greenish-yellow ranges, it appears they might be able to see a little bit of green as well. In other words, cats are mostly red-green color blind, as are many of us, with a little bit of green creeping in.
mijares5812

How can airplanes defy the laws of gravity? - 1 views

answers.yahoo.com/...index

airplanes laws gravity

shared by mijares5812 on 31 Oct 14 - No Cached
  • Aircraft do not defy the law of gravity, they produce a sufficient force to overcome gravity, just as you do if you decide to jump in the air.
  • There are four main forces acting on an aircraft, thrust from the engines, drag on the airframe, gravity pulling down and lift generated by the wings.
  • Once the size of the lift is greater than the weight of the plane then gravity will be overcome and the plane will rise. Once cruising altitude is achieved the lift force is balanced with the weight and the aircraft stays at a constant height.
  • ...6 more annotations...
  • they don't. they use push (from jets, props, whatever) to make them go fast. then the aerodynamics of the plane helps it float on air (like a sheet of paper dropping). then the flaps on the wings help control if it goes up or down. it would be like taping a balloon to a paper airplane. the plane is what glides through the air and the balloon makes it go.
  • when the airplane moves fast enough, the air rushing below the wing pushes up, generating lift. keep it going fast enough, and the wind would keep it up
    • mijares5812
      mijares5812 on 04 Nov 14
       
      AIRPLANES DONT DEFY THE RULES OF GRAVITY  IT JUST JUMP WITH HIGH SPEED TO THE AIR  AND GLIDE 
    • mijares5812
      mijares5812 on 04 Nov 14
       
      THERE ARE FOUR FORCES ON THE AIRPLANES THE LIFT FROM THE WING THE GRAVITY THAT PULLS IT DOWN THRUST THAT PUSHES IT AT A HIGH SPEED THE THRUST COMES FROM THE ENGINES AND THE DRAG WICH DRAGS THE AIRPLANE
    • mijares5812
      mijares5812 on 04 Nov 14
       
      "THEY DONT THEY PUSH AND GO FAST TO MAKE THEM GO FAST AND THEY JUMP THE AERODYNAMICS HELP IT FLOAT (LIKE A SHEET OF PAPER)" (FROM YAHOO ANSWERS n0that5mart) 1
    • mijares5812
      mijares5812 on 04 Nov 14
       
      When a airplane goes fast enough the air going below the wing lifts the wing up . if it the plane keeps going at that speed the wind would lift it up as it glides
guzman5860

Why is the sky black at night? - 1 views

www.whyzz.com/why-is-the-sky-black-at-night

sky black

shared by guzman5860 on 31 Oct 14 - No Cached
  • As the Earth rotates it turns away from the sun’s light, and the sky becomes dark. However, if you think about the millions and millions of bright stars all around the sky at night, you might start to wonder why it isn’t just as bright as it was when we were facing the sun!
    • guzman5860
      guzman5860 on 04 Nov 14
       
      As the earth rotates it gets away from the sun and it starts getting dark and the moon comes out and the stars also but the moon and the stars don't give so much light. as the sun.
Diego Hinojosa

Neptune -- Britannica School - 0 views

school.eb.com/...345012

neptune Atmosphere

shared by Diego Hinojosa on 04 Nov 14 - No Cached
  • The planet that Voyager uncovered is a stormy, windswept world with a vivid blue hue. Its highly active atmosphere is surprising, since it receives so little sunlight to power its weather systems. Like the other giant outer planets, Neptune has no solid surface. It also has a system of rings and more than a dozen moons.
    • Diego Hinojosa
      Diego Hinojosa on 04 Nov 14
       
      Neptune is a planet that has a lot of blue. It's atmosphere and also surface is not solid. It also has rings and like 12 moons.
  • Neptune is the smallest of the four giant outer planets. The diameter at its equator is about 30,775 miles (49,528 kilometers), as measured at a level of the atmosphere where the pressure is 1 bar (the pressure at sea level on Earth). This makes it slightly smaller than Uranus but nearly four times as big as Earth. Neptune’s mass is about 1.2 times greater than Uranus’, however, and more than 17 times greater than Earth’s. It is the third most massive planet in the solar system, after Jupiter and Saturn. Like the other outer planets, Neptune has a low density—only about 1.6 times the density of water. However, it is the densest of the four, being roughly 25 percent denser than Uranus.
    • Diego Hinojosa
      Diego Hinojosa on 04 Nov 14
       
      Neptune is also the smallest planet of the biggest four. The atmosphere of neptune is really thick.Neptune is the most hard planet in other words solid planet and it is four times bigger than the earth.
garzat5774

BrainPOP | Hair - 1 views

www.brainpop.com/...hair

brainpop hair

shared by garzat5774 on 05 Nov 14 - No Cached
    • garzat5774
      garzat5774 on 05 Nov 14
       
      All mammals have hair in there body because they need to keep themselves warm when it's cold, we are warm blooded as the rest of the mammals. all mammels have hair exept the water mammels like whales and dolphins but they keep warm there bodies by eatins a lot of amilals and get layers of fat that will keep them warm, but etherway they have at least a little bit of hair one point during there lives. 
    • garzat5774
      garzat5774 on 05 Nov 14
       
      Hummans have hair in almost every part of our body, some places that don't include our lips, the palms of your hand and the souls of your feet. But our hair is different in each part of your body. One type of hair is the lauguno hair, wish is the hair babies are covered with.Another type of hair is the vellus hair wish is the hair moat of your body is covered with, those hair is the one in your legs and arms and mesures less than 1 inch,And the 3rd type is the terminal hair wish is longer than an inch and grows in the top of your head and other places.
    • garzat5774
      garzat5774 on 05 Nov 14
       
      how doe your hair grow? first before you are born tiny foccils are formed inside your skin, foccils are like roots but for hair. you have a ton of focills you have 100,000 yust in your head alone. AT the bottom of each foccils you have thousands of cells with are dividing each second , as they divide and are craetedb the old ones are pushed out and out of you head this makes hair
  • ...1 more annotation...
    • garzat5774
      garzat5774 on 05 Nov 14
       
      each hair has 2 or 3 diffrent types of layers the outermost layer is called the cuticle wich protects the rest of the hair. the middle hair is called the cortex, and the center of the hair is caled meddul, you only have medulla in your terminal hair and if you are a natural blande you dont have any meddula at all.
Diego Hinojosa

Uranus -- Britannica School - 0 views

school.eb.com/...339203

Atmosphere of Uranus

shared by Diego Hinojosa on 04 Nov 14 - No Cached
  • Uranus is the third largest planet in the solar system, after Jupiter and Saturn. Uranus is about four times bigger than Earth. Its diameter at the equator is about 31,763 miles (51,118 kilometers), as measured at the level of the atmosphere where the pressure is the same as at sea level on Earth. The planet is slightly larger than Neptune, but Neptune is about 1.2 times more massive. Uranus’ density is quite low—only about 1.3 times that of water, compared with 1.6 for Neptune and 5.5 for rocky Earth.
    • Diego Hinojosa
      Diego Hinojosa on 04 Nov 14
       
      Uranus is the third biggest planet on the whole solar system it is four times bigger than earth and it has a ver massive atmosphere
    • Diego Hinojosa
      Diego Hinojosa on 06 Nov 14
       
      Uranus is one of the 3 other planets that is the biggest on the whole solar system.It has a very harsh atmosphere.And it has very little water.
Nany Rocha

Stereotypes Examples - Examples Of Stereotypes - 0 views

fos.iloveindia.com/stereotypes-examples.html

stereotype examples facts

shared by Nany Rocha on 04 Nov 14 - No Cached
  • Whenever we don't have a good understanding of a subject, say, of people or countries, then we tend to make assumptions about them. Stereotype is nothing but those assumptions that have become common knowledge. Whenever you make judgments about people without knowing them, you are stereotyping them. Stereotyping makes people generalize things. More often, they are all false assumptions. Though there are both positive and negative stereotypes, a majority of them are offensive. People generally stereotype out of bias against a particular group of people or religion. Stereotyping becomes a way of conveying their dislike. Of course, stereotyping stems from a commonly held view of a particular group or race. This view may arise from an incident or false assumption, and then maybe used to color the entire community with the same brush. There are various types of stereotypes. However, the most common ones are racial stereotypes and gender stereotypes. Race, nationality, gender and sexual orientation are the main factors of stereotyping. Stereotyping must be avoided at all costs, as it leads to treating groups as a single entity. Given below are examples of stereotypes that people commonly use.
  • Examples Of Stereotypes Negative Stereotypes All blond women are dumb. All red heads are sluts. Christians are homophobic. They are blinded by God and will recruit you if you go near them. All politicians are philanders and think only of personal gain and benefit. If I wear Goth clothing I'm a part of a rock band, depressed, or do drugs. Girls are only concerned about physical appearance. Guys are messy and unclean. Men who spend too much time on the computer or read are geeks. Men who are not into sports are termed as gay. All librarians are women who are old, wear glasses, tie a high bun, and have a perpetual frown on their face. Girls are not good at sports. All teenagers are rebels. All children don't enjoy healthy food. Only anorexic women can become models. Women who smoke and drink do not have morals. Men who like pink are effeminate.
  • Positive Stereotypes All Blacks are great basketball players. All Asians are geniuses. All Indians are deeply spiritual. All Latinos dance well. All Whites are successful. Asians have high IQs. They are smarter than most in Math and Science. These people are more likely to succeed in school. African Americans can dance. All Canadians are exceptionally polite. French are romantic. All Asians know kung fu. All African American men are well endowed. Italians are good lovers
  • ...5 more annotations...
  • types Women Women always smell good. Women take forever to do anything. Women are more brilliant than men. Women are always moody. Women try to work out problems while men take immediate action. All women like the color pink. All women like dolls. Women become cheerleaders. Women take 2 hours to shower. Women hog the bathroom. Women love mirrors. Women like make-up. Women are fussy about their hair. Women work in department stores. Women like fashion magazines. Women are discrete about intimacy. Women do not drive well. Women never take chances. Women always talk too much on the phone. Women actually use only 5% of what's in their purse. Everything else is junk. Only women can be nurses.
  • Men Only men can be doctors. Men are stronger and more aggressive. Men are better at sports. Men hate reading. Men always have an "I don't care" attitude. Men don't get grossed out by scrapes and bruises. Men are tough. Men are thickheaded. Men like cars. Men become jocks in high school. Men take 2 seconds to shower. Men like hats. Men could care less if they become bald. Men wear whatever is clean. Men usually work in messy places. Men like car or porn magazines. Men brag about intimacy. Men take too many chances. Men always lose all arguments against girls. Every race, culture, country, religion and a community has a stereotype. It is a way of oversimplifying groups of people. It is one of the easiest ways of establishing identity. By conforming to a fixed or conventional image, the identity can be recognized and understood. And, herein lies the problem. It's hard to be objective if one doesn't reject stereotypes. So, it is better not to use any stereotype and pass judgments only when you are familiar with others.
  • Every race, culture, country, religion and a community has a stereotype.
  • Every race, culture, country, religion and a community has a stereotype.
    • Nany Rocha
      Nany Rocha on 05 Nov 14
       
      Every region and race has a stereotype.It is a way of sometimes insulting but also simplifying.But is actually better to not talk or show someone stereotypes because it could be a judgment and you could hurt others if you really know them. 
  • Nany Rocha on 04 Nov 14
     
    It describes what kinds of stereotypes there is
marino5856

World Clock: Time in the 24 World Time Zones - 0 views

www.elbertwade.com/page142.html

world time zones

shared by marino5856 on 10 Nov 14 - No Cached
    • marino5856
      marino5856 on 10 Nov 14
       
      There are actually 23hr and 59 minutes so they say it is 24 hours. The p.m starts again in one but this is how we count them: 13=1 pm, 14=2 pm 15= 3pm 16= 4 pm 17= 5 pm 18= 6 pm 19= 7 pm 20 =8 pm 21 = 9 pm 22= 10 pm 23 =11 pm. Pm is 23:59:59. AFter this its starts all over again.
  • At Noon, the 12-Hour clock repeats the same hour numbers but as PMAt Noon, the 24-Hour clock keeps adding hour numbers: 13 = 1 PM; 14 = 2 PM; 15 = 3 PM; 16 = 4 PM; 17 = 5 PM; 18 = 6 PM; 19 = 7 PM; 20 = 8 PM; 21 = 9 PM; 22 = 10 PM; 23 = 11 PM through 23:59:59 -- then starts over at 00:00:00 (Midnight)On both clocks, the minutes and seconds are exactly the same
marino5856

Why are there 24 hours in a day? › Ask an Expert (ABC Science) - 0 views

www.abc.net.au/...3364432.htm

day hours

shared by marino5856 on 31 Oct 14 - No Cached
  • "The origin of our time system of 24 hours in a day with each hour subdivided into 60 minutes and then 60 seconds is complex and interesting," says Dr Nick Lomb, consultant curator of astronomy, from the Sydney Observatory.
  • Our 24-hour day comes from the ancient Egyptians who divided day-time into 10 hours they measured with devices such as shadow clocks, and added a twilight hour at the beginning and another one at the end of the day-time, says Lomb.
  • "Night-time was divided in 12 hours, based on the observations of stars. The Egyptians had a system of 36 star groups called 'decans' — chosen so that on any night one decan rose 40 minutes after the previous one.
    • marino5856
      marino5856 on 04 Nov 14
       
      The 24 hours has been invented by the egyptians. They first divided it into 10 hours but then they divided it in 12 because of the twilight. So night time was divide in 12 hours because they wanted to see the stars in the night and also that there would be light in the day.
  • ...3 more annotations...
  • The subdivision of hours and minutes into 60 comes from the ancient Babylonians who had a predilection for using numbers to the base 60. For example, III II (using slightly different strokes) meant three times 60 plus two or 182.
  • "We have retained from the Babylonians not only hours and minutes divided into 60, but also their division of a circle into 360 parts or degrees," says Lomb.
  • While each country has (in broad terms) historically had distinct measurements for distance, weights etc the method of splitting the day into 24 hours, one hour into 60 mins and one minute into 60 seconds seems to be the only one in use, and indeed to me the only one I know of. This non-metric measurement of time is far from ideal, but what other comparably accurate methods have been used historically?
Eugenio Ferrara

Why does the sky change color at sunset? - 0 views

www.whyzz.com/the-sky-change-color-at-sunset

sky

shared by Eugenio Ferrara on 31 Oct 14 - No Cached
  • The sky is blue all day because the particles in our atmosphere cause light’s energies to scatter! Th
  • The reason we have color is because we have light! Beams of light contain different energies that our eyes then interpret as certain colors. When the sun shines onto Earth and lights up the sky, it shines waves of energies containing lots of colors
lobo5879

instaGrok - 0 views

www.instagrok.com/results.html

nightmares dreams

shared by lobo5879 on 31 Oct 14 - No Cached
  • Nightmares tend to happen during the second half of a night's sleep, when REM intervals are longer. [source]
  • Nightmares are rarely prescriptive, meaning they are not signs that something bad will happen.
  • Nightmares are frightening dreams that usually awaken the sleeper from REM sleep. [source]
  • ...2 more annotations...
  • Nightmares can reveal fears that are keeping you from moving forward. [source]
  • Nightmares tend to occur after several hours of sleep, screaming or moving about is very uncommon, the dream is usually elaborate and intense, and the dreamer realizes soon after wakening that he or she has had a dream. [source]
Nany Rocha

Why We're So Materialistic, Even Though It Doesn't Make Us Happy - 0 views

lifehacker.com/ough-it-doesnt-make-1486081424

shared by Nany Rocha on 05 Nov 14 - No Cached
  • We tend to equate buying things with positive emotions. Subsequently, we think that purchasing new stuff makes us happy. It's a pretty clear correlation. In a study published in Neuron, researchers looked at what's going on in the brain when we think about buying stuff. When a product image flashed before people's eyes, an area of the brain called the nucleus accumbens lit up when a subject liked what they saw. Essentially, the brain's pleasure center kicks into gear and floods the brain with dopamine at the very thought of getting something we want. The weirdest thing about this is that just thinking about buying something is pretty much the same as actually buying it.
    • Nany Rocha
      Nany Rocha on 05 Nov 14
       
      We want to buy things,we make our brain think : "the more I buy things the happier I will be,LETS BUY MORE STUFF!"
  • "Thinking about acquisition provides momentary happiness boosts to materialistic people, and because they tend to think about acquisition a lot, such thoughts have the potential to provide frequent mood boosts," Richins wrote, "but the positive emotions associated with acquisition are short-lived. Although materialists still experience positive emotions after making a purchase, these emotions are less intense than before they actually acquire a product."
  • It's probably no surprise to most of us, but study after study shows that buying stuff doesn't make us happy. More importantly, we're actually unhappy when we put too much value on material objects.The big problem here isn't just that we're a little bummed out when someone else has more stuff than we do. It's that when we put a lot of emphasis on materialistic value, we're prone to depression, personality disorders, and more. One study from
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    • Nany Rocha
      Nany Rocha on 05 Nov 14
       
      buying stuff is supposed to make us happy but we are so materialistic and it doesn't make sense we trick our brain into thinking that the more we buy the happier well be but I now understand that happiness comes from having stuff because we trick our brain to it.
guzman5862

Why do people cry? - WebMD Answers - 0 views

answers.webmd.com/...why-do-people-cry

Brain Information tears

shared by guzman5862 on 31 Oct 14 - No Cached
  • “Crying is a natural emotional response to certain feelings, usually sadness and hurt. But then people [also] cry under other circumstances and occasions," says Stephen Sideroff, PhD, a staff psychologist at Santa Monica--University of California Los Angeles & Orthopaedic Hospital."People cry in response to something of beauty. There, I use the word 'melting.' They are letting go of their guard, their defenses, tapping into a place deep inside themselves."
  • Crying is a
  • "People cry in response to something of beauty. There, I use the word 'melting.' They are letting go of their guard, their defenses, tapping into a place deep inside themselves.
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  • sadness
  • melting
    • guzman5862
      guzman5862 on 04 Nov 14
       
      Crying is something created by emotions and feelings such as sadness and pain. But people also cry because they want. People cry because you reach the highest limit of your eyes like when you hit it hurt so much and the hurt goes to all of your body so you destroy your defense/guard and  let the tears pass your eye from deep inside you.
  • Crying may also have a biochemical purpose. It's believed to release stress hormones or toxins from the body, says Lauren Bylsma, a PhD student at the University of South Florida in Tampa, whose research has focused on crying.
    • guzman5862
      guzman5862 on 06 Nov 14
       
      If you cry it can also have some effects that it lets out somethings like hormons toxins and stress from some part of you. And when you releze all those things you feel kind of dizzy.
deleon6878

Should children have homework? | Debate.org - 0 views

www.debate.org/...should-children-have-homework

shared by deleon6878 on 04 Dec 14 - No Cached
  • I looked through the NO side. While I was doing so, I saw many errors. Most of the NO side complain that they have sports to do first, did it not occur to you that studies come first? If you fail school, the coach will (most likely) not let you play in that tournament/ game/ meet. As for the grammar errors on the NO side, I believe that many could use some Language Arts homework.
    • deleon6878
      deleon6878 on 04 Dec 14
       
      People don'y do homework cause their lazy and say they have a lot of homework has it ever come to mind that studies com first than sports.
  • Students should have homework because it prepares them for high school and college. If we don't prepare them in middle school and elementary school they will be more overloaded in high school and college because they didn't expect it. Long Live Homework! Plus, if we don't have homework, kids will go home and forget everything they learned.
    • deleon6878
      deleon6878 on 04 Dec 14
       
      If people do homework you prepare them for high school and collage plus they always have to review what they did that day 
  • 1. It helps you learn it better.2. It helps you understand it better.3. It tests you if you were listening while the lesson is being taught.4. It gives you problems to solve to help you get better at it.5. Homework is a good way to involve a child's family in the learning
    • deleon6878
      deleon6878 on 04 Dec 14
       
      "1. It helps you learn it better. 2. It helps you understand it better. 3. It tests you if you were listening while the lesson is being taught. 4. It gives you problems to solve to help you get better at it. 5. Homework is a good way to involve a child's family in the learning"
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  • .Also if you manage your time correctly you would still have a good 4-5 hours of free time before you sleep.Homework prevents last minute studying and can often give you better marks in school
    • deleon6878
      deleon6878 on 05 Dec 14
       
      And if you use your time correctly you still have 4 or 5 hours of free time before bed plus you get better marks i8n school if you do homework 
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