Physics

How are sparks generated from flint, quartz, and metals? What burns during a spark? How do the non-sparking tools prevent or reduce...

Physics

Could Uranium 238 be used in conjunction with photovoltaic cells in order to create a viable power...

Physics

Can you explain the formula for computing the hydrogen burning lifetime of a star with 15 solar masses and luminosity of 10,000 x sun? My text says:...

Physics

I would like to know what causes inverted icicles. I have a photo I've just taken if you need to see it. Our puppy's water bowl outdoors has had...

Physics

Do permanent magnets lose their strength when they are dropped and if so, why? I took two magnets that were the same strength and dropped one several...

Physics

What is the cause of static electricity? Also, I'm doing research for a book and I wanted to know if people have small amounts of electrical activity...

Physics

I am studying tension and compression in support structures such as hammocks and diving boards. The trees supporting a hammock are compression...

Physics

Is the up and down movement of a piston in a combustion engine a waste of impulse energy? The piston has to slow down to a stop then accelerate to...

Physics

Which metal conducts heat the...

Physics

Can a sintered ore magnet be re-magnetized in a different configuration of its poles? Does it need be heated to its Curie point to be easily...

Physics

I am currently doing research on the e-bow, a guitar effect that calls upon an infinite feedback loop to produce infinite sustain by keeping the...

Physics

Ok, this is my project: I have put roughly two cups of rice in a sock and threw it in the microwave for four and a half minutes, it kept its warmth...

Physics

I am in the 6th grade in Denver, Colorado. I made a machine out of 2 by 4s that will kick a ball. I want to see if air pressure in a ball has an...

Physics

I was studying for a science exam and stumbled across a chapter that covered energy. The chapter states that for a flame it can have different colors...

Physics

Has anyone ever weighed nuclear reactions in reactors to see if the reactor weighs more while generating energy? Specifically, I am interested if...

Physics

Is there a high permeability magnetic shield that does not have iron in...

Physics

What will happen when individual IC (integrated circuit) components reach the size of atoms and can't get any...

Physics

I know the basic details of how an ionization smoke detector works, where particles enter the chamber and block the alpha particles so that the...

Physics

I am doing a report on aluminum and the impact it has on our environment for a science class. Do you know how aluminum is disposed of? And if it...

Physics

(1) What quantities of the earths atmosphere are lost to outer space over a given time? (2) how much is added to the earths mass by meteorites and...

Physics

I heard that electricity can be transmitted in other forms than electron flow; like electromagnetic beams. This way we could power appliances or...

Physics

If we heat a square metal page with a circle hole in the center of it, what will happen to both the square and the hole size after...

Physics

Is it true that gas particles at higher altitudes are farther away from each other than at lower altitudes, and, if this is true, does it apply to...

Physics

What is colour? How does the brain perceive...

Physics

What are the globes which, when you puts your hand close to them, display electrical energy resembling lightning? How do they...

Physics

Why are sounds so much louder downwind, even when the wind is...

Physics

How does a atom split and how does it create such a big explosion? Also how can I split an atom at...

Physics

Sir please tell me how the lghtwaves gets their momentum or how they come into...

Physics

I teach moon phases to my third graders. On posters, in textbooks, and online, I have seen differing depictions. When looking at the moon from the...

Physics

If you have a square 1 pound block with a front flat surface strike a ball, would it be the same as if you had the same weight block, but cut out in...

Physics

How does the earth stay in the same place in...

Physics

Do neutron stars evolve further? Charts of star evolution always show the neuton star as the last stage in the life of some high mass stars. But...

Physics

Can you explain the meaning of the phrase: " has cleared the neighbourhood around its orbit.” I have read that Pluto is no longer considered a...

Physics

How can I create a real light saber? It does not have to be completely like the ones in the movie but it must be in a sword shape, able to stop...

Physics

What would be the appearance of the moon if it were in the western sky just after sunset? Why would a full moon always be rising just as the sun is...

Physics

(Re: E=Mc^2) Why does E/M=c^2 rather than simply c^1 (which is an altogether respectably large number) or c^3 (which defines a spatial volume rather...

Physics

How much energy did the highest energy neutrino detected so far have?...

Physics

I understand why magnetism is a relativistic effect, "caused" by Lorenz contraction effectively increasing charge density. I have also read that in...

Physics

Conservation of momentum can explain the exchange of a virtual photon between two electrons and the repulsive force that results. But it cannot...

Physics

A black hole is a central point the size of a pinhead where a huge amount of mass is concentrated. If, by the two equations F=(GMm)/r^2 and...

Physics

Do different isotopes vary slightly in chemical properties? Or are they the same? i.e. are the orbital energies somewhat different because of charge...

Physics

Why do magnets erase magnetically recorded data? Are there some generally accepted guidelines for safe distances you can place audio tapes (video...

Physics

Why would one person when he returns from travel at the speed of light have aged differently than someone else who stayed...

Physics

Supposedly in classical electromagnetism an accelerating charge radiates. If so, why? If so, then does an observer in the accelerating frame "see"...

Physics

1. I would like to know when was Hubble's constant discovered / invented? 2. How many times it was changed? 3. The names of the scientists who...

Physics

When and how was the kaleidoscope...

Physics

What are the most recent theories about what existed before our big bang? Have there been one or even several ones before this one...

Physics

How can I find out whether it takes more effort (work by pump) to increase the air pressure in a tire from 60psi to 80psi if the tire is under...

Physics

I'm doing a science experiment with magnets and was wondering, do magnets lose their strength over time? Also, what is the most powerful magnet I can...

Physics

Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...

Physics

1) Which of the following two options is more widely accepted by the scientific community? a) Elementary particles actually exist in quantum states...

Physics

If light is made of photons, and photons have mass, and many photons of light are hitting the earth from the sun, shouldn't the earth be getting...

Physics

In science fiction it is common to see P-P fusion, but my reading seems to indicate it is inefficient compared to other forms of fusion. If we could...

Physics

Do all planets and stars rotate on themselves, and do we know...

Physics

I have a liquid crystal display screen computer monitor. I am looking for unbiased information on the chemicals in my flat screen. I would like to...

Physics

Does antimatter's gravity have the same properties ordinary...

Physics

What would make it possible for a man to move through solid objects? Is it at least in theory possible for a man's molecules to fit between the...

Physics

What kind of weather is on Mercury and Saturn? Does it rain or snow on these...

Physics

I have read that when oxygen is condensed to a liquid state, or indeed to a solid state it becomes paramagnetic and it has magnetic properties much...

Physics

Can you explain the process by which hot materials emit light? Particularly, why is infrared light associated with heat, (especially since infrared...

Physics

I've got a question about light. As I understand it, light is a particular form of energy--in order for something to produce light, energy of some...

Physics

Is it possible for a singularity to form outside a black...

Physics

How do you calculate potential energy for an object which is sitting on the floor? PE=mgh, which means that potential energy is equal to mass x...

Physics

Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer, since there is no heat or movement of atoms? If no...

Physics

1.) Do the intesity of the sun's rays increase the current in a solar cell? 2.) Does increased current affect the amount of electric power produced...

Physics

Are light and matter the same thing? Can you get matter from...

Physics

What is the heat wanted to melt the hardest substance in the...

Physics

A question about tri-coil atomic fusion/fision... If one used positive and negative ionized plasma, would these have enough attraction to tear apart...

Physics

Is the orbit of the moon around earth a perfect circle? If not, when is the moon closest to us? What about farthest from...

Physics

Does light exert...

Physics

I have been charging a leyden jar with an electrophorous (pieplate and cup) and was wondering how the charges from the electrophorous travel ...

Physics

I am interested in the age-old debate on whether a person gets wetter by walking in the rain or by running. I would like to compare the results of...

Physics

What would happen if the nucleus of an atom contained too many or too few neutrons, or even none? Can you please list some facts about the nucleus...

Physics

If a sound is played to a person over a period of time, is there a way to work out (or to estimate) the percieved loudness of it at any point in...

Physics

How does the static universe theory (Gamow, Hoyle...) explain the 3K cosmic background radiation. Also, each time I see a astronaut in space, he...

Physics

What are the temperatures reached at the focused point of a magnifying glass, when using the sun as the power source? I know it would probably...

Physics

Which would hit a baseball further - a wooden bat or a aluminum bat?...

Physics

If mass can be converted to energy by using E=mc2, how can energy be converted to...

Physics

Is there actually a strobe light on the International Space Station? I saw in the sky a sequence of two closed flashes cycled on approximately ten...

Physics

How does mass shifting affect Earth's rotation? Could melting of polar icecaps cause a change in rotation? ...

Physics

Heisenberg's uncertainty principle tells you that the mass of a particle multiplied by the imprecision of its position mutiplied by the imprecision...

Physics

When rockets were sent to Jupiter, did scientists get any readings? Does Jupiter have a solid surface, or is it just a big ball of...

Physics

I have a physics paper here (don't worry i am not asking you for the answers!) that says each U-235 fission releases 206MeV like this: Fission...

Physics

Light cannot escape from a black hole, because of the black hole's mass. If this is true, then light must be affected by mass. Would it not then be...

Physics

I have done lots of research on auroras and I understand almost every thing about them. The basic facts are that once the protons/electrons from the...

Physics

What happens when electrons pass through a magnetic field at a velocity near...

Physics

I have been reading Feynman and what he says seems to make sense to me, in particular:
photons are particles
photons do not travel in...

Physics

Collision of galaxie clusters. In recent news reports that I've read it has been reported that further proof of dark matter has been ...

Physics

I'd like to model magnetic fields on my computer, but I can't find any software. Can you point me in the right direction? ...

Physics

How do I estimate the mass of an object when I know its volume and nothing more? For example, how would I calculate the mass of an F-14 Tom Cat...

Physics

If neutrinos have mass, as now seems to be the case, they cannot travel at the speed of light … explain why not? ...

Physics

Where in the universe are we? We seem to know the dimensions of the Universe; so does it have the shape of a ball or a football? We must be off...

Physics

Is it true that no mass can travel at the speed of light? If this is true, as you are nearing the speed of light, would you decrease in mass?...

Physics

What is the name of the most recent planet discovered, and where is...

Physics

How did neutrinos get to be objects of such low energy? Neutrinos are supposed to have been generated by the "big bang" and form part of background...

Physics

Why are rail road pieces magnetized? Me and my friend noticed particles of steel and iron forming chains around the edge of large railroad peices...

Physics

NASA has recently detected the presence of ice on the moon. Since the moon is surrounded by void space, how is it that that ice has not been...

Physics

Is there any magnetic shielding material which is not itself attracted by a...

Physics

How many times can you split up an...

Physics

Can you tell me whether it would be possible to launch a spacecraft into orbit using a giant catapult? I can see no reason why not. Obviously any...