Physics

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Synopsis: Physics & astronomy: Physics: Physics:

-and-go shock wave down the highway. One driving-simulator study found that nearly half the time one vehicle passed another,

including an onboard magnetometer so that it can always tell where the pilot is in relation to its flight path,

But his father s day job as a high school chemistry and physics teacher laid an unusual theoretical foundation for his son.#

I paid special attention to the rollout of new technologies, the role of urbanization in altering agro-business dynamics,

A magnetometer in the device worn on the cow s head determines the animal s angle of approach.

Does the invention of theflashdark violate our current laws of physics? Even so, is it still a viable technology?

Inside Science News Service is supported by the American Institute of Physics. Ker Than is a freelance writer based in Southern California i

and the University of Alaska Fairbanks. Inside Science News Service is supported by the American Institute of Physics i

and generates a four-dimensional mathematical model derived from the physics of the atmosphere. With high accuracy Deep Thunder can deliver hyper-localized weather conditions up to three days in advance with calculations as fine as a single mile and as granular as every 10 minutes.

For this to become a viable possibility NASA engineers would have to solve some daunting technological materials-science and physics issues.

We might be able to go to the moon one day soon technology has increased vastly since the 60's especially force field tech.@

With the invention of a working force field (electromagnetic) also bladders filled with water or slush in the structure of spacecraft to reduce the impact of the solar wind.

I'm working on a physics degree right now and what you're saying about Van allen belts

Go pick up a physics textbook learn REAL science not the bastardized pop culture edition.@@Wollf Laacrenbut in the grim darkness of the far future there is only war!

Think applied physics. Also the use of the scientific method isn't reserved exclusively to scientists.

you are actually answering slightly different questions one from a Newtonian perspective the other from a General relativity perspective.

In general relativity on the other hand gravity propagates at the speed of light; that is the motion of a massive object creates a distortion in the curvature of spacetime that moves outward at light speed.

but remember that general relativity is conceptually very different from newtonian gravity so a direct comparison is not so simple.

Strictly speaking gravity is not a force in general relativity and a description in terms of speed and direction can be tricky.

and general relativity very nearly reproduces the newtonian result. In the case of a disappearing sun (whatever that even really means;

it's hard to discuss physics problems when the heart of the question involves a word as grotesquely metaphysical and unclear as'poof

but during that 8 minutes it would be orbiting as normal in that it wouldn't'lag'behind the sun.*Another way of looking at your discrepancy is to remind you all that relativity does away with an ABSOLUTE frame of reference.

Oh yes and gravity*does*work at the speed of light you might check wikipedia on'gravity waves'.'Sorry JRHELGESON the only thing that was correct in your post was-most probably-your name.

Get back to physics 101: -Of course according to science the sun would never just disappear into nothing so his disappearing act would violate most conservation laws

and belongs to the realm of fantasy instead of science. So stating that all his gravitatory âÂ#Âoefieldã¢Â# would disappear instantly

1-The most accepted theory of gravity is Einsteinã¢Â#Â#s General relativity. It says that gravity moves at the speed of light

No tsunamis at all. lol at the understanding of physics soem people have...dissappearing sun is not impossible-imagine some unknown dimensional rift

In general relativity which supersedes classic mechanics gravity travels in waves at the speed of light. The speed of gravity has actually been measured experimentally not with pinpoint accuracy but within the ballpark of the speed of light.

and very few high school students have the math skills to tackle relativity. However relativity is far a more accurate model of how objects in our universe behave.

The article is about the heat from the sun hypothetically disappearing. The last paragraph about the mass of the sun being affected is really the cause of all the confusion.

and light from the sun in near-instantaneous fashion it's not hard to visualize something highly improbable yet entirely consistent with the laws of physics.

It was an epiphany says Vaneck who works for the Massachusetts research and development company Physical sciences Inc. PSI.

so that as it flapped he could analyze the fluid dynamics. At the University of California at Berkeley neurobiologist Michael Dickinson built a robotic fruit-fly wing that likewise mimicked a fly s natural motion

other researchers have used flapping-wing dynamics to reduce the size of aerial vehicles capable of carrying payloads.

For films with no GNRS the pressure dropped to zero in about 100 seconds as nitrogen escaped into the vacuum chamber.

Halas Rice's Stanley C. Moore Professor in Electrical and Computer Engineering professor of physics professor of chemistry and professor of biomedical engineering is one of the world's most-cited chemists.

Douglas Natelson a professor of physics and astronomy and of electrical and computer engineering and Krishna Palem the Ken and Audrey Kennedy Professor of Computer science and Electrical and Computer Engineering and a professor of statistics.

The expansion will mark Jove's eighth journal section after the recent additions of Jove Chemistry and Applied Physics.

the optical measurements were carried out in the Tony Heinz lab in physics. The structural modeling and electronic structure calculations were performed by the David Reichman lab in chemistry.

The electron microscopy was performed by atomic imaging experts in the David Muller lab at Cornell University's School of Applied and Engineering Physics and the Kavli Institute at Cornell for Nanoscale Science.

) This research was supported by the U s. Air force Office of Scientific research Multidisciplinary University Research Initiative by the UK Engineering and Physical sciences Research Council and through a postdoctoral research fellowship from the Alexander Von humboldt Foundation.

and department chair of physics and astronomy at Rice. This is the first time anyone has arranged these four cell types in the same way that they are found in lung tissue.

In the lab you are just seeing part of the process of root growth said Bucksch who works in the group of Associate professor Joshua Weitz in the School of Biology and School of Physics at Georgia Tech.

Wildland fires involve complex interactions that include fuel distribution terrain topography chemical reactions energy transfer and the associated fluid dynamics that transport moisture gas-phase hydrocarbons air

burns to help develop models describing the chemistry and fluid dynamics of fires. His interest was sparked.

what is going to dictate the fluid dynamics in the vicinity. In turn the fluid dynamics of the air and combustible hydrocarbons as fire progresses could point the way to where the fire will spread.

The process begins with pyrolysis the thermochemical decomposition of organic material at elevated temperature Dr. Mahalingam says.

and the resulting fluid dynamics will in turn drive the fire. Continual warming of the leading edge of the fire is a necessary precondition to releasing the chemicals in the fuels that are needed to sustain it.

Imperfections as small as a stray oxygen molecule on the graphene were picked up by a spectrometer.

and functions of nanomaterialsby â#drawingâ##micropatterns on nanomaterials using a focused laser beam scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applications.

Through the use of a simple efficient and low cost technique involving a focused laser beam two NUS research teams led by Professor Sow Chorng Haur from the Department of physics at the NUS Faculty of science demonstrated that the properties of two

Instead of focusing sunlight we can focus laser beam onto a wide variety of nanomaterials and study effects of the focused laser beam has on these materials. â#Micropatterns â#drawnâ##on Mos2 films could enhance electrical conductivity

and photoconductivitymolybdenum disulfide (Mos2) a class of transition metal dichalcogenide compound has attracted great attention as an emerging two-dimensional (2d) material due to wide recognition of its potential in and optoelectronics.

and their team members utilised an optical microscope-focused laser beam setup to â#drawâ##micropatterns directly onto large area Mos2 films as well as to thin the films.

With this simple and low cost approach the scientists were able to use the focused laser beam to selectively â#drawâ##patterns onto any region of the film to modify properties of the desired area unlike other current methods where the entire film is modified.

Hidden images â#drawnâ##by focused laser beam on silicon nanowires could improve optical functionalitiesin a related study published in the journal Scientific Reports on 13 may 2014 Prof Sow led

The team scanned a focused laser beam rapidly onto an array of mesoporous silicon nanowires which are packed closely like the tightly woven threads of a carpet.

They found that the focused laser beam could modify the optical properties of the nanowires causing them to emit greenish-blue fluorescence light.

Their understanding enabled them to â#drawâ##a wide variety of micropatterns with different optical functionalities using the focused laser beam.

To develop materials with properties that can cater to the industryâ##s demands Prof Sow together with his team of researchers will extend the versatile focused laser beam technique to more nanomaterials.

And because our devices use silicon oxide--the most studied material On earth--the underlying physics are understood both well

and keep the corn cubs for food we have come a long way says Per Morgen professor at the Institute of Physics Chemistry and Pharmacy University of Southern Denmark.

and most recently at Columbia University where he's now an associate professor of biological sciences and physics.

Sahin collaborated with Wyss Institute Core Faculty member L. Mahadevan Ph d. who is also the Lola England de Valpine professor of applied mathematics organismic and evolutionary biology and physics at the School of engineering and Applied sciences

. so he can use the portable spectrometer to test for chemicals used to simulate aging.

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