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Jac Londe

Sr2IrO4 - 0 views

As it turns out, the new phase that the Hsieh group identified is precisely this type of multipolar order. To detect multipolar order, Hsieh's group utilized an effect called optical harmonic gene...

setoftags physic science ondes

started by Jac Londe on 02 Nov 15 no follow-up yet
Jac Londe

Greebo Science - 0 views

  • Planck Units
  • Planck units are largely based upon three fundamental units, h, G, and c.
  • The gravitational constant is given the symbol "G".   It is a measured value used in the force equation for gravity (see below). F = Gm1m2 / r2 The m units are masses of two bodies which are separated by a distance r.   By rearranging the equation, we have G (see below). G = Fr2 / m1m2 The gravitational force, F, was measured between two masses to arrive at G.   At various times, the laboratory equipment and methods were improved to arrive at more accurate values for G.   The physics texts were not usually updated for the new values because (1) the changes were not great enough to justify the added expense to the texts, and (2) the changes were happening frequently enough to make each text obsolete before it arrived in the hands of students.   Consequently, there are numerous variations of G to be found, but the differences between them are slight. There are many systems of weights and measures used in physics.   Fundamental constants such as G often have two values according to the measuring system used.   When two such units are mixed to arrive at subsidiary units such as the planck length, the result is a completely erroneous value along with units of measure which do not apply.   Consequently, it is important to convert the various units of the fundamental constants used to the same system of units.   In may instances of late, this has not been done. Finally, there is human error involved in copying from an old text to create a new next.   This means that it is wise to check various texts to see if they all agree (they usually don't), and decide what is correct and what is not correct.   For G, the following was discovered.
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  • G = 6.670x10-11 newton meter2/kilogram2 From a text created by the Department of Physics at the U.S. Air Force Academy in about 1955, Formulas and Tables. G = 6.673x10-11 newton meter2/kilogram2 From a textbook last copyrighted in 1972, Elements of Physics. G = 6.6742x10-11 meter3/kilogram second2 From a science publication announcing an improved value based upon data from a recent experiment 1994.   Note that the the text mentioned below, probably written prior to 1994, did not include the change. G = 6.67259x10-11 newton meter2/kilogram2 From a textbook last copyrighted in 1997, Fundamentals of Physics Extended.  
  • 1 newton = 1 kilogram of force = 1 kilogram of mass x 1 meter/second2 = 100,000 dynes
  • For h, the following was discovered. h = 6.6252x10-34 joule second   or   4.134x10-15 electron volt second
  • 1 joule = 10,000,000 ergs = .737324 (one book gave .7376) foot pounds = 1 watt second = .1020 kilogram meter
  • The joule is defined as the unit of work or energy equivalent to work done or heat generated in one second by an electric current of one ampere against a resistance of one ohm - or raising the potential of a coulomb by one volt.
  • The erg is defined as the unit of work and of energy, being the work done in moving a body one centimeter against a force of one dyne. 1 erg = one centimeter dyne = 980.7 centimeter grams = 107 joules = 107 watt seconds The electron volt (sometimes called the equivalent volt) is defined as the unit of energy equal to that acquired by an electron passing through a potential of one volt.
  • h = 1.0753x10-35 kilogram meter2/second G = 6.6742x10-11 meter3/kilogram second2 c = 2.9979x108 meters/second
Jac Londe

FutureTechToday.com: Water-Revitalization Technology for Better Vitality - 0 views

  • Water is a polar molecule which means that one side of the molecule is more positively charged while the other side is more negatively charged. The result of this charge differential is an attraction between molecules making water a much more complex substance than mainstream science (Quantum Physics, etc.) has ever given it credit for! It is this attractive force between water molecules which causes water to form droplets rather than a molecular mist. These attractive forces also result in clusters of water molecules in nature which are very sensitive to environmental conditions. In nature, if we observe water closely we see (as it does flowing down a drain) it move in circular paths in order to maintain a high energy or frequency state. Molecular spin is an important factor when considering the polar attraction between water molecules; it makes common sense that faster molecular spin will decrease this molecular attraction and consistent or resonant molecular spin may have an ordering or structuring effect. Municipal water systems utilize straight pipes which carry water long distances under high pressures dampening the molecular spin of water causing much larger clusters of molecules locking up the hydration power of water! This can be measured as surface tension. Natural spring water is considered "living water" due to the high frequency molecular spin and the vibrancy of nature.
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    Water is a polar molecule which means that one side of the molecule is more positively charged while the other side is more negatively charged. The result of this charge differential is an attraction between molecules making water a much more complex substance than mainstream science (Quantum Physics, etc.) has ever given it credit for! It is this attractive force between water molecules which causes water to form droplets rather than a molecular mist. These attractive forces also result in clusters of water molecules in nature which are very sensitive to environmental conditions. In nature, if we observe water closely we see (as it does flowing down a drain) it move in circular paths in order to maintain a high energy or frequency state. Molecular spin is an important factor when considering the polar attraction between water molecules; it makes common sense that faster molecular spin will decrease this molecular attraction and consistent or resonant molecular spin may have an ordering or structuring effect. Municipal water systems utilize straight pipes which carry water long distances under high pressures dampening the molecular spin of water causing much larger clusters of molecules locking up the hydration power of water! This can be measured as surface tension. Natural spring water is considered "living water" due to the high frequency molecular spin and the vibrancy of nature.
Jac Londe

Squeezed light a small step forward toward detecting gravitational waves - 0 views

  • Gravitational waves are generated by accelerating masses. So, our planet, which is constantly accelerating towards the sun, is sending out a constant stream of gravitational waves. Just really small ones. Likewise, colliding neutron stars will emit a strong burst of gravitational waves. How strong? Well, if the stars were on the other side of our galaxy, a one meter bar on Earth would elongate by about 0.1am (attometer = 10-18m). 
  • orbit of an electron around a hydrogen atom (about 0.05nm),
  • In a light field, the amplitude (a measure of the brightness of the light) and the phase (which controls how to combine light fields) can't both be measured with absolute accuracy—even if you had the perfect measuring device. You can picture the problem as bunches of photons popping into and out of existence, causing the phase and amplitude of the of the light to jitter around. This doesn't add or subtract energy, but it does continuously redistributes the energy along the light beam.
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  • You might think that a photon here or there shouldn't make a difference, but the scaling isn't independent of the laser light entering the interferometer. If you have one photon, you will have a photon of noise. If you have four photons, you will have two photons of noise. The noise increases slower than the signal and the laser power is increased. So, the easiest way to improve the signal to noise ratio is to crank up the power.
Jac Londe

We are living in a bacterial world, and it's impacting us more than previously thought - 0 views

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    ""The true number of bacterial species in the world is staggeringly huge, including bacteria now found circling the Earth in the most upper layers of our atmosphere and in the rocks deep below the sea floor," "
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    ""The true number of bacterial species in the world is staggeringly huge, including bacteria now found circling the Earth in the most upper layers of our atmosphere and in the rocks deep below the sea floor," "
Jac Londe

Quantum causal relations: A causes B causes A - 0 views

  • In everyday life and in classical physics, events are ordered in time: a cause can only influence an effect in its future not in its past. As a simple example, imagine a person, Alice, walking into a room and finding there a piece of paper. After reading what is written on the paper Alice erases the message and leaves her own message on the piece of paper. Another person, Bob, walks into the same room at some other time and does the same: he reads, erases and re-writes some message on the paper. If Bob enters the room after Alice, he will be able to read what she wrote; however Alice will not have a chance to know Bob's message. In this case, Alice's writing is the "cause" and what Bob reads the "effect". Each time the two repeat the procedure, only one will be able to read what the other wrote. Even if they don't have watches and don't know who enters the room first, they can deduce it by what they write and read on the paper. For example, Alice might write "Alice was here today", such that if Bob reads the message, he will know that he came to the room after her.
Jac Londe

Electricity FERC - 0 views

  • Regulatory Changes by the Federal Energy Regulatory Commission
  • FERC Orders 888 and 889
  • On April 24, 1996, FERC issued Orders 888 and 889, which encourage wholesale competition.  The primary objective of these orders is the elimination of monopoly power over the transmission of electricity.  To achieve this objective, FERC requires all public utilities that own, control, or operate facilities used for transmitting electric energy in interstate commerce to: file open access nondiscriminatory transmission tariffs containing minimum terms and conditions, take transmission service (including ancillary services) for their own new wholesale sales and purchases of electricity under open access tariffs, develop and maintain a same-time information system that will give existing and potential  users the same access to transmission information that the public utility enjoys, and separate the transmission from generating and marketing functions and communications.
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  • Recovery of stranded costs is perhaps the most contentious issue confronting regulators in promoting competition.  Stranded costs (or assets) are costs that have been prudently incurred by utilities to serve their customers but cannot be recovered if the consumers choose other electricity suppliers. One study has estimated current stranded assets at $88 billion, and estimates of projected stranded costs range from $10 billion to $500 billion. In its Order 888, FERC reaffirmed "that the recovery of legitimate, prudent and verifiable stranded costs should be allowed." FERC's directive is grounded in the belief that the recovery of stranded costs "is critical to the successful transition of the electricity industry to a competitive, open-access environment." For this purpose, direct assignment of costs to departing customers was selected as the appropriate method for recovery of stranded costs.
Jac Londe

Heliophysics nugget: Riding the plasma wave - 0 views

  • Throughout the universe more than 99 percent of matter looks nothing like what's on Earth.
  • This material that pervades the universe, making up the stars and our sun, and also – far less densely, of course – the vast interstellar spaces in between, is called plasma. Plasmas are similar to gases, and indeed are made of familiar stuff such as hydrogen, helium, and even heavier elements like iron, but each particle carries electrical charge and the particles tend to move together as they do in a fluid.
  • "Which particles are moving, what is the source of energy for the motion, how does a moving wave interact with the particles themselves, do the wave fields rotate to the right or to the left – all of these get classified," says Lynn Wilson who is a space plasma physicist at NASA's Goddard Space Flight Center in Greenbelt, Md.
Jac Londe

Chaos - 0 views

  • In the framework of complex dynamical systems we can view the world at the beginning of this century as loosely connected with clusters of highly complex trouble spots and the number of people with a global perspective and fast connections was very small. Today we have multiple systems of global information exchange together with impressive data and information systems accessible for a rapidly growing number of people. We claim that the a global computer network will have a much more dramatic impact on global issues than other networks of global communication systems like television or telephone. In the first case we obtain many features that we can associate with the development of biological brains whereas in the two latter cases many essential features are missing. The most relevant one is the creation of the analog of cell assemblies.
Jac Londe

Wigner Distributions and How They Relate to the Light Field - 0 views

  • Wigner Distributions and How They Relate to the Light Field
  • Abstract In wave optics, the Wigner distribution and its Fourier dual, the ambiguity function, are important tools in optical system simulation and analysis. The light field fulfills a similar role in the computer graphics community. In this paper, we establish that the light field as it is used in computer graphics is equivalent to a smoothed Wigner distribution and that these are equivalent to the raw Wigner distribution under a geometric optics approximation. Using this insight, we then explore two recent contributions: Fourier slice photography in computer graphics and wavefront coding in optics, and we examine the similarity between explanations of them using Wigner distributions and explanations of them using light fields. Understanding this long-suspected equivalence may lead to additional insights and the productive exchange of ideas between the two fields.
Jac Londe

Why is space three-dimensional? - 0 views

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    (Phys.org)-The question of why space is three-dimensional (3D) and not some other number of dimensions has puzzled philosophers and scientists since ancient Greece. Space-time overall is four-dimensional, or (3 + 1)-dimensional, where time is the fourth dimension. It's well-known that the time dimension is related to the second law of thermodynamics: time has one direction (forward) because entropy (a measure of disorder) never decreases in a closed system such as the universe.
Jac Londe

Creative Destruction: GE's Brand New 100W Equivalent LED Bulb Illuminates the Future of... - 0 views

  • GE’s Brand New 100W Equivalent LED Bulb Illuminates the Future of Lighting May 7, 2012 Engineers at GE’s NELA Park in East Cleveland, Ohio, have spent a century building better light bulbs. When NELA opened in 1911, it became the world’s first industrial park, a distinction that earned it a place on the National Register of Historic Places. But now a new kind of history is taking place at NELA, the kind that will soon dispatch the incandescent light bulb down the same road traveled by the LP and the VCR. “This is an evolution,” says Glenn Kuenzler, a lighting engineer at NELA. He and his team of researchers are making sure that the GE bulb, whose legacy stretches back to Edison, is fit to survive.
Jac Londe

EBBG - 0 views

  • "To say we were striving for a one-world government is exaggerated, but not wholly unfair. Those of us in Bilderberg felt we couldn't go on forever fighting one another for nothing and killing people and rendering millions homeless. So we felt that a single community throughout the world would be a good thing."
  • The original conference was held at the Hotel de Bilderberg, near Arnhem in the Netherlands, from 29 to 31 May 1954. It was initiated by several people, including Polish politicians Józef Retinger and Andrew Nielsen, concerned about the growth of anti-Americanism in Western Europe, who proposed an international conference at which leaders from European countries and the United States would be brought together with the aim of promoting Atlanticism – better understanding between the cultures of the United States and Western Europe to foster cooperation on political, economic, and defense issues.[3]
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    Études critiques sur un noyau de commandement.
Jac Londe

World Military Spending - Global Issues - 0 views

  • Of all the enemies to public liberty war is, perhaps, the most to be dreaded because it comprises and develops the germ of every other. War is the parent of armies; from these proceed debts and taxes … known instruments for bringing the many under the domination of the few.… No nation could preserve its freedom in the midst of continual warfare.— James Madison, Political Observations, 1795
Jac Londe

Flickr: Ciaran Hughes - 0 views

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    Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show content to your friends and family, or blog the photos and videos you take with a cameraphone.
Jac Londe

Scientists suggest spacetime has no time dimension - 0 views

  • Scientists propose that clocks measure the numerical order of material change in space, where space is a fundamental entity; time itself is not a fundamental physical entity.
  • They propose to replace these concepts of time with a view that corresponds more accurately to the physical world: time as a measure of the numerical order of change.
  • No time dimension
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  • “Einstein said, ‘Time has no independent existence apart from the order of events by which we measure it,’”
  • “Newton theory on absolute time is not falsifiable, you cannot prove it or disprove it, you have to believe in it,” Sorli said. “The theory of time as the fourth dimension of space is falsifiable and in our last article we prove there are strong indications that it might be wrong. On the basis of experimental data, time is what we measure with clocks: with clocks we measure the numerical order of material change, i.e., motion in space.”
Jac Londe

Neural signature of mental time travel | ZME Science - 0 views

  • Neural signature of mental time travel
  • memory triggering
  • “By examining the patterns of brain activity recorded from the implanted electrodes,” Manning said, “we can measure when the brain’s activity is similar to a previously recorded pattern. When a patient recalls a word, their brain activity is similar to when they studied the same word. In addition, the patterns at recall contained traces of other words that were studied prior to the recalled word.” “What seems to be happening is that when patients recall a word, they bring back not only the thoughts associated with the word itself but also remnants of thoughts associated with other words they studied nearby in time,” he said.
Jac Londe

Magnetic pressure - Wikipedia, the free encyclopedia - 0 views

  • Magnetic pressure
  • Magnetic pressure is an energy density associated with the magnetic field.
  • Interplay between magnetic pressure and ordinary gas pressure is important to both the fields of magnetohydrodynamics and plasma physics. Any magnetic field has an associated pressure that is contained by the boundary conditions on the field, and a gradient in field strength causes a force due to the magnetic pressure gradient; this force is called the magnetic pressure force.
Jac Londe

Real Estate Market - 0 views

  • Real Estate Market Always Bounces Back In fact, there is nothing much to worry about because we have all seen it throughout the period of history – real estate market always hits back. If the market is falling now, it does not mean things will always remain like that. You must have patience. It may take months or sometimes even a couple of years when property prices will again start rising. You are not going to lose anything if you own the property as an investment for a long period, such as over ten or fifteen years. Even if you have bought it with an intention to live in it, you should not stress yourself because of a temporary decline in property rates. By the time when you will completely pay off your mortgage, the price of your p
  • roperty would have reached double or even triple of the amount you spend to make the initial purchase.
Jac Londe

Physicists confirm surprisingly small proton radius - 0 views

  • Physicists confirm surprisingly small proton radius
  • In the experiment described in the newly published Science article, the energy shift was determined for another transition. This leads to a new measurement of the electric charge radius of the proton. Its value of 0.84087(39) femtometres (1 fm = 0.000 000 000 000 001 metre) is in good agreement with the one published in 2010, but 1.7 times as precise.
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