Physics

Dear All, I am new here to this forum and would like to say hello to all of you. I am conducting hall effect on 1x1 cm CIGS solar cell. I would like to know if the results I am getting from the instrument are correct. Therefore, I am looking for some journal papers on the electrical properties of CdS CIGS thin film. Thank you all in advance. Waiting eagerly for your replies

So it is believed that before time all things were one, a singularity. What exactly were the very first branches to sprout off of the "universal vine"... the very first thing(s) to exist outside of that singularity? From what I can see: 0) Singularity (and some law of physics allowing for plurality) 1) Division of forces (gravity / electronuclear) 2) Presence and absence (energy and space)

Considering it would be far away from the nearest planet, moon, etc., there wouldn't be much gravity on a space station, so how would the occupants of a space station keep their feet on the floor? Is that possible on the International Space Station? If it is, how do they do it when in such a weak gravitational pull?

I have never read anywhere, our heard an explanation of, WHY the speed of light figure, @ 300,000,000 meters per sec, has to be squared, light speed times itself, in order for the conversion of energy to mass or vis-versa can be understood. The squaring of the number seems to suggest that an enormous speed of @ 9x10 to the 16th meters per second is needed to convert mass energy to light energy or visa-vie. Has anyone read anything on this matter? The equation in question is E=MC2...

How do scientist measure the center of mass for a rock? I have searched the internet for this answer, but it tells more on how to measure 2 objects from each other, as in G* [m1*m2] /r sqrd ], the gravitational constant of proportionality... BUT! this is not what I am looking for. I have this rock and I would love to just measure its center of mass only, not in relation to another object. What I envision is this: Mass of rock time the electron mass, but that is how far I get Any ideas please??? Thanks!

im researching "gravity values" for each country for a science magazine.. is it possible??? and someone in a forum says that "In Finland the gravity value is twice the rest of the world. This is why it is difficult to export from Finland and the flags never flap in the wind." Do you know anything about it? Anything about gravity in Finland?

What is the significance if these are produced at CERN. What will this mean for the world of physics??

Since motion in a magnetic field by a conductor produces electrical charge in the conductor, does the strength of magnetic field degrade over time if we keep the conductor in motion? IF no then does anything degrade or lose energy over time in this scenario other than the fact that I lose energy in moving the conductor.

When an atom becomes an positive ion, magnetic field should be able to repel it. But my question is, is this possible? First of all, if magnetic field can change the direction of flowing electrons then for it to change the direction of ion should be possible. But i think the main problem is how far the ions will travel depending on the strength of the magnetic field. P.S. it will be great if anyone know any equations that might help Merged post follows: Consecutive posts mergedP.S. when I say changing the direction of flowing electrons, I mean when electrons are traveling through air.

in terms of background radiation why is it that some places have higher levels than others (within UK) and which jobs cause the highest exposure to radiation? thanks

If I turn on a laser in space, will it accelerate ? Usually rocket engine send mass to the back to accelerate in the opposite direction. Light has no mass, but has momentum and by conservation of momentum law the laser should accelarate... I am not sure and that is why I am asking.

Abstract Mass in our most up-to-date theory was beleived to be a by-product of a Boson and its respective field. Finding this particle, called the Higgs Boson has proven difficult. It seems likely that scientists will have to find a new mechanism for mass - and in this work, we will advocate one of those theories. What is Mass? So, what do physicists mean when they speak of a mass, or rather, a mass term? For a while, physicists tried to answer this question a number of ways. There was such a thing as an electromagnetic mass [1] at one point in physics. The was the idea that the electromagnetic field interacted with a quantum object in such a way that it…

http://www.nakka-rocketry.net/fins.html So as i read and understood this, i have a question. If i empty half or a third of a rocket, the CG will go down and i will use the gravity to balance my rocket, is that possible ? im about to show u this picture where i thought that because 1 side of the rocket is empty, the other side will be pulled downwards acting same as the fins. or i think it might be even better, but the main disadvantage is that we can only use half of the rocket so the fuel we have is less. http://img823.imageshack.us/img823/4710/cpcg.png I was reading exghaust pressure and stuff and saw nozzle with 30 degree inward and 12 degree outward is …

That have zero mass in what sense? Your use of the term "mass" is contrary. When you choose to say that light has zero mass then you have chosen to use the term "mass" to mean "proper mass". The proper mass of a particle does not change its value with c. Therefore the assertion that Einstein showed that a massive particle can't travel at c because its mass would become infinite is then am invalid statement.

I intend to calculate electric field in certain point above surface of crystal, which is infinite in directions of surface and below. Crystal is composed of unit cells containing equal amount of positive and negative ions (+1e and -1e). Distances between ions and between point and surface (jons at the top) are in the same order of magnitude. Should I simply calculate electric field from ions containing in some radii of the point - like from half of a spheres, and extrapolate results to infinity? Or mayby consider some thin discs or whatever else making use of Gauss's Law? Best regards, Aksonik

Has any experiments varified that light speed cannot increase or decrease that it is constant, no matter where you go? I've Googled around this topic and only bumped into experiments that are about Einstein's relativity. Experts please help

http://en.m.wikipedia.org/wiki/Refrigeration Nowdays modern people look at physics science as a rare commodity!!

http://www.foxnews.com/world/2012/05/27/german-teen-solves-300-year-old-mathematical-riddle-posed-by-sir-isaac-newton/ Does anyone know what is this problem that was unsolved for 300 years, and the other part about 'bouncing' problem?

ok so i have been doing a little bit of research about it and it is maid of positrons or opposite charged electrons and opposite charged protons but when it comes in contact with (our perspective) normal matter it annihilates why is this really and if it is a anti particle does it have any sort of anti gravity or is there even a way to have anti gravity exist

HI. A red laser beam aimed to a red-tinted clear glass will pass trough ? A red laser hitting an opaque red target will bounce or be absorbed ? A red laser will bounce or pass trough a yellow-tinted clear glass ? A red laser hitting an opaque yellow target will bounce or be absorbed ? -Assume same colors are same wavelengths- What are the rules, where can I find knowledge to predict the behavior for many color permutations ? Safety goggles protect for a specific wavelength laser or for all wavelengths below the selected one ? Safety goggles protect by reflecting or by absorbing the light and dissipating it on the lens without allowing to pass tr…

I heard that X-Rays cannot be reflected, is this true? and if so why?

I think dielectric phenomenas do contribute in fission reactions!!! The harnessed energy when released assumes the same structural emittance towards the sky and then making a mushroom dielectric effect. So does nuclear. But why does it assume such mushroom shape at specific height of atmosphere? Why wouldn't the charged particles perhaps electrons never scatter above such height?

Help - I know this is a schoolboy question, but I have just bought a few bits and peices from Maplins to show my 6 year old the basics of a circuit. A simple 6 volt battery pack, wire, switch and a 6v .1 amp bulb in a holder. I used a multimeter to test the circuit which showed .1 amp current, 6.35 volts and 8.3 ohms resistance - Ohms Law would suggest that the resistance should have read 63.5 ohms. I don't know who is more confused - my son or me. Can anyone help?

ok so when we move through time and space we have momentum ok so if u move time/space through an object can you create momentum which might create momentum defying certain laws of physics

ok so if electrons do not any 3 dimensional shape then is there a way to turn energy into mass as in like matter itself or could it be possible to make sertain particles (and i use that term lightly) that effect certain parts of physics but not others like effecting gravity but not electomagnetics or effecting one part of string theory but not another