Recent content by Jakell

Yeah; photons do not have mass, but they do contain the energy associated with a mass. The author bases all the rest of the paper off this flawed idea, and most of it can be discounted. The only reason one would view photons as having a "corkscrew momentum state" is because it has a spin of...

As long as it is a magnet, yes, it will induce a current in the conducting coil or tube as it is inserted and pulled out.

If you have the tubes cut to those lengths, you have made palm pipes. Just hit the ends with your palm, and you should be good to go. You may be an octave lower since you will be working with one end of the pipe closed, but you should be fine.

first you want to figure out how long it takes the sound to travel the 235 meters. if you know that, you can use the frequency to figure out how many times the string vibrates in that period.

The effect has more to do with the fact that by coating the object with water, a good deal of light is reflected off the surface, instead of being scattered in random directions by the rough, dry surface.

Bathroom scales assume you are under the influence of Earth's gravity at 9.8m/s/s, and calculate your assumed mass off of that assumption. A quick way to fool your scale is to get on an elevator that accelerates upwards and downwards, making it look like you weigh more then less of what you...

When an electron and a positron annihilate each other, they produce a pair of photons. The photons conserve energy, and by having two of them, they conserve the momentum of the initial particles as well.

When light interferes ,the energy does not just disappear. You will get spots where there is destructive interference, and spots with constructive interference; the energy is isolated into the bright bands. As for the collision of an electron and a positron, both have positive energy (ie it...

When you have a lighting rod, the tip is usually very pointy. At these sharp edges, you can build up an extremely large electric field compared to that along the length of the rod. The stronger electric field allows the air to become ionized much easier, dissipating much of the charge on the...

Yeah. Quantum effects are not going to manifest themselves very readily in your situation. the more exact you build the dropper, board and what not, the more consistent your die drop will be. If you use something as large as a cubic die, you can ensure that you get the same value. Something...

Potons tend to stick together due to the strong nuclear force. If you get too many together, the protons' electric charge repels others strong enough to make them leave the nucleus (nuclear fission). As for the H2 molecule at zero kelvin, it doesn't exist. As you get closer to 0K, the...

Perhaps gravity is the word we use to describe the attractive field produced my masses, while gravitation is the ressponse to that field, or the force. A dictionary would hit the spot here better.

Easy question first, why the graph does not pass through zero. it does not pass through zero because you started with a velocity interval between t=0s and t=.1s. The smaller that time interval, the closer you would get to a starting velocity of zero. You could have also held the cart at the...

The lense has to be transparent to that frequency of light. For example, glass is quite transparent to visible light, while opaque to thermal IR. Silicon, on the other hand, is transparent to IR and opaque to visible light. Admittedly I do not know the transparencies of different materials to...

At those high energeis, the gamma rays act more like particles then the waves we know and love.