Group items tagged

end of the spectrum are the reds and oranges. These gradually shade into yellow, green, blue, indigo and violet. The colors have different wavelengths, frequencies, and energies. Violet has the shortest wavelength in the visible spectrum. That means it has the highest frequency and energy. Red has the longest wavelength, and lowest frequency and energy. LIGHT IN THE AIR Light travels through space in a straight line as long as nothing disturbs it. As light moves through the atmosphere, it continues to go straight until it bumps into a bit of dust or a gas molecule. Then what happens to the light depends on its wave length and the size of the thing it hits. Dust particles and water droplets are much larger than the wavelength of visible light. When light hits these large particles, it gets reflected, or bounced off, in different directions. The different colors of light are all reflected by the particle in the same way. The reflected light appears white because it still contains all of the same colors. Gas molecules are smaller than the wavelength of visible light. If light bumps into them, it acts differently. When light hits a gas molecule, some of it may get absorbed. After awhile, the molecule radiates (releases, or gives off) the light in a different direction. The color that is radiated is the same color that was absorbed. The different colors of light are affected differently. All of the co

d after Lord John Rayleigh, an English physicist, who first described it in the 1870's.) WHY IS THE SKY BLUE? The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by t

As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white.

James Blunt Carrie Underwood Rihanna Pussycat Dolls Natasha Bedingfield

In 2002 about 40% of U.S. carbon dioxide emissions stem from the burning of fossil fuels for the purpose of electricity generation. Coal accounts for 93 percent of the emissions from the electric utility industry. US Emissions Inventory 2004 Executive Summary p. 10 Coal emits around 1.7 times as much carbon per unit of energy when burned as does natural gas and 1.25 times as much as oil. Natural gas gives off 50% of the carbon dioxide, the principal greenhouse gas, released by coal and 25% less carbon dioxide than oil, for the same amount of energy produced. Coal contains about 80 percent more carbon per unit of energy than gas does, and oil contains about 40 percent more. For the typical U.S. household, a metric ton of carbon equals about 10,000 miles of driving at 25 miles per gallon of gasoline or about one year of home heating using a natural gas-fired furnace or about four months of electricity from coal-fired generation.

Vampire bats, the only mammals to feed exclusively on blood, including human blood, recognize their prey by the sound of its breathing.

Vampire bats feed on the same prey over several nights

bats use breathing sounds to identify their prey in the same way as humans use voice to recognise each other.

A year after Apple Computer Inc. launched its iTunes Music Service, the online music industry is selling songs by the millions

Customers at three of the leading online services – iTunes, Musicmatch Inc.’s Musicmatch Downloads and RealNetworks Inc.’s Rhapsody – buy about 10 times as many singles as they do albums. Offline, people buy 50 times more CDs than singles.

music lovers buying a few 99-cent singles instead of $15 CDs.

the music industry is for the first time seriously considering a file sharing surcharge that internet service providers would collect from users.

seek an extra fee on broadband connections and to use the money to compensate rights holders for music that's shared online.

Griffin's idea is to collect a fee from internet service providers -- something like $5 per user per month -- and put it into a pool that would be used to compensate songwriters, performers, publishers and music labels.

"worst decline in the history of the CD."

Physical album sales have plunged about 27% so far in the fourth quarter

Digital tracks sales are up

As coaches, we expect our players to work in the off-season and make improvements. But what about us as coaches... what are we doing in the off-season to help our team and to improve ourselves as coaches?

Maintain balance in your personal life. Right after the season is over, step back and forget about it for a couple weeks. Take time for your family and friends, relax, enjoy life and your time away from the gym.

We already discussed re-evaluating your system, plays, players, etc. Make the necessary adjustments, if any, that you think will help next season. Think about your goals for the upcoming season. Now is the time to create a master practice plan, if you find that helpful.

The season is winding down. Routines change, friendships have grown, priorities change. As a player, what should you do now? When practice time comes and there is no practice, what do you do? When there are no games to prepare for, what do you do with your time? Here are a just a few thoughts I had as to how to recover and prepare for the next season. 1. Take 3 - 4 weeks to relax. It has been a long, physically and mentally draining season. If you want to improve, you have to give yourself a chance to recover. 2. Catch up and get ahead of your schoolwork. 3. Talk to your coach and evaluate your season. Talk about what you did well and what you did not. Determine the areas you need to improve on. Discuss the things you would like to do and how to accomplish them. 4. After taking a month off, start on your off-season workout program. The program should be about 75% skill work and 25% play. 5. Develop your shooting stroke. If you want to become a GREAT shooter and raise your percentage, it MUST happen during the off season. It's just TOO difficult to develop these skills and improve during the season. It must be done during the off season! 6. Start a strength training program. Your objective should be to gain strength from now until the end of the summer. 7. As you enter the summer, add more play to your workout. You should be at about 50% skill work, 50% play. Don't neglect your weight work. Great strength gains can be made during this period. 8. Go to camp. Learn form other coaches, play against different players. The more diverse your summer experience, the better player you will become. 9. When the summer is over, your routine changes. GET AHEAD in the classroom. Once the season starts, it is easy for your schoolwork to slip. 10. Change your workout routine to 25% skill, 75% play. 11. Switch you strength training routine to an endurance and strength maintenance routine. 12. A week before the season, take some time off. Get ready to go.

The Chesapeake Bay, forexample, has been polluted with the nutrients nitrogen andphosphorus and with excess sediment caused, in part, by urbanrunoff. The excess nutrients cause algae blooms that blocksunlight from reaching bay grasses-which are a source of food,shelter, and nursery grounds for many aquatic species.

In aneffort to control nutrient pollution in the Chesapeake Bay, theExecutive Council of the Chesapeake Bay Program" established agoal to reduce the nitrogen and phosphorus entering theChesapeake Bay by 40 percent, including through control of runofffrom urban areas.