Physics

http://nymag.com/guides/fallpreview/2007/television/36554/ New York Magazine got six young (late twenties) physicists together to discuss and comment on a new CBS show called The Big Bang Theory The snapshots of them are colorcoded so you can tell which head is talking. they have some frank insider viewpoints on life in today's physics departments Here is the cast of characters---name, age, physics specialty Azfar Adil (age 27, high-energy particle physics) David Kagan (27, theoretical physics) Becky Grossman (26, black-hole binary dynamics) Gabe Perez-Giz (32, gravitational wave physics) Laura Newburgh (26, cosmology) Simon Judes (27, string theory) …

I have been dealing with a question for a very long time now and I can seem to word it correctly to find sources on the net to read up on, so I was hoping someone actually educated in physics could simply give me a pointer. I come from a biological background, and well physics is still and interest to me in a great many ways. To make the story short via evolution one can find connections of affinities between organisms. When reading up on physics I find stuff that with an uneducated eye seems to appeal to me as somewhat the same. I have no idea though what I am talking about but I am greatly interested in anyone that has studied for lack of better words why natural ph…

So how long does falling from Everst take? I heard someone said it only takes 12s but my calculatios shows it takes about 42s! Am I missing something here or that person has made a mistake? I need the real time not the approximate:eyebrow: Height: 8,848 m (29,029 ft) Thanks:-)

Who would you say to be the most influential physicist alive today? Is it possible to say?

It is in video: http://www.metacafe.com/watch/718152/how_to_turn_water_into_ice_in_seconds/ Thanks.

Can the mobile towers on building do any harm to the people living in it by radiation?

We believe that we measure time, we say that time “times” things, or events, and that there are “intervals” of time, there is a “time distance”. Indeed much of Physics is based on the singular concept of linear time. But we know that time doesn't really have “length”, or “width”, it doesn't occupy any space, like objects do, we can't “see” time. Time is dimensionless, in that sense. We also say things like “heat is transferred” or “heat is motion” which is like saying that “movement moves”, so why not say that time “times” things? Or space “distances” things or distance “spaces” things, or motion “moves” things? Isn't that, in fact all we ever really do when w…

http://www.physorg.com/news110191847.html It's cool but weren't we suppose to find something like this about a half-century ago?? I'm mean you don't even need a lab to reproduce this experiment.

==quote== French, German Scientists Win Nobel Physics Prize By VOA News 09 October 2007 The 2007 Nobel Prize for Physics has been awarded to two scientists from France and Germany for their work in nanotechnology. France's Albert Fert and Germany's Peter Gruenberg were recognized for discovering a technique (giant magnetoresistance) that allows computer users to store large amounts of data quickly and easily on hard disks. The Royal Swedish Academy of Sciences made the announcement Tuesday in Stockholm. It says the discovery can be considered "one of the first real applications of the promising field of nanotechnology". ==endquote== This link has a ver…

Would there be a corpse, with the insides broken but still in one piece, or would it just be a pile of flesh and blood, with no physical resemblance?

I have a Lightning Ball. The next paragraph will describe it and the behavior of the lightning inside it in detail, you make find it interesting but if you don't skip it. It creates purpley lightning in its center that becomes more pinky as it gets to the outside of the ball, it is not like tesla coil lightning in that it is more curvy and less angular. There are lots of strands of lightning that go from the center to the edge of the ball. The strands are attracted to myself. The strands branch at less points along there length than those of Tesla Coil videos I have seen but snake around more. The strands disperse as they reach the outside of the ball just before the …

I wrote a short paper about electricity magnetism and the derivation of Maxwell equation see attached file What i need is your comments suggestion an language mistake correction From water pipe lines toward Maxwell EquationsC.pdf

Ok, I was wondering if a EM Wave can carry data, I do belive that i heard or read that they could, but I need to know how i could get a EM Wave, more pacificly, Radio Waves, to carry huge amount of data, like a video, not just the small audio waves... I have a little FM Radio Tranmiter, that a radio can pick up, but it can only carry audio files, is it posible to, as above, have it carry high amounts of data at once, and have it be picked up by a laptop with a Radio Adapter? Thank, -Iruka P.S. Im relly sorry if i seam like a idoit with this post, but im only 13, so dont be to harsh...

Am back with my bubbles ; would like opinions on what would happen if very fine air bubbles are released from aquarium type stones under a fluid as viscous as honey. The actual test will happen in a few days as am waiting for some supplies but will apreciate your opinion before. I believe large bubbles would surface and eventually pop, but small ones (smaller than ~1mmØ) would stay trapped at least several hours. The question is; if the supply of bubbles does not stop from the bottom of the container; how will the mix behave; will there be a limit of expansion ? Will tunneling to release the air develop ? I find it hard to visualize. Help please. Miguel

Anybody hear anything about who is being considered? I read that Monday 8 October they announce the prize for work in medicine Tuesday the 9th, physics Wednesday, chemistry. Some chance the Peace prize might recognize environmental work this time.

Awesome forum… think I might be spending a lot of time here in the future. I’m a filmmaker by trade but I’ve always been interested in the science of flight… I got some free time this semester so I thought maybe I could do some reading. Anyone know some beginner books (or links) on the physics of flight? Things like calculating lift, wind resistance, etc Any help would be appreciated, thanks! Brad Paloaltothemovie.com

so how do birds find the right direction during immigration? plz dont move this thread to another section since i guess it has something to d with earth magnetic field!

What's the difference between electric charge and magnetism?

Conservation of resource means avoiding their wasteful use. Does this definition cover all aspects of conservation? This question is very weired for me. I am a student and writing from Sikkim. Please help. Thanks in advance

Imagine an electron and a positron (nearly) at rest a (nearly) infinite distance apart. Let the electron and positron fall directly toward each other (preferably without forming positronium) and annihilate. The energy of the system is [math]E = 2 m_e c^2[/math], and is conserved. But, as the particles fall, they gain kinetic energy, so that must mean that their rest mass/energy is decreasing. The rest mass decreases toward 0 as the speed of the particles increases toward c. Also, the dipole moment is decreasing toward 0. You could say that it looks more and more like light. So my questions: 1. Do the various models that predict the rest mass of a particle account fo…

When I learned about Shannon's theories I was intrigued by the concept of information having entropy. The explanation, I recall, went something like: A message contains information, or has information content. This content may describe an expected, or an unexpected, event. An unexpected message has more information content than an expected one. This content is said to be a measure of the entropy of the information (Shannon entropy). A message is both a real (i.e. encoded in binary) piece of information, and also any event (like say a supernova, or the decay of a particle, or a change in kinetic energy, ...) which is encodable. It is fairly intuitive that unexp…

I am a final year Product design student and i need help with my major. I am doing a medical device that uses quantum cascade laser technology to take readings of the patient. I am trying to find someone who might tell me what a quantum cascade laser consists of and what components are required to power such a laser? Also, metaphorically speaking could this technology be reduced to the size of a device such as a mobile phone? Sorry i haven't given to much away but spies are every where! If anyone could assist me and get back to me, then i would be extremely grateful.

question guys, why does a bicycle remain standing when it is moving while if falls to either side when it's stationary? thanks! i just want to add a question here. where is the center of gravity of the bicycle?

Does a balance occur when angular momentum is conserved? I'm still stuck with that bicycle question. I'm thinking that angular momentum might indeed be one of the answers to it.

Hi I have a CRT radiotron tube with a fluorescent screen that's been used for electron beam deflection demonstrations in the past. There are four pins and one anode at the top of the tube.(Rated 6.3 V for cathode heating and 500 V max) Haven't been able to get it to operate. Suspect it may be blown, but I wouldn't mind locating any literature on the deflecting electron beam demo with magnet, mainly to get the wiring of the pins right. I do get the glow from the heating of the element at 6.3 V. My power supply also provides 300 V. Is the 300V enough to supply a PD for the beam to flow when the "tron"is rated at 500V max across that gap. Any comments? Any literature? Thank…