Recent content by WarVsFutility

One idea is to make a lens by taking a ring and stretching a balloon over it, and you could alter the focus of this lens by filling it or emptying it with a liquid that has less density than water. I haven't tried it, but it should work... I think.

Try taking a series of long prisms and see if you can use constructive interference to make a solar panel make use of more of the energy in sunlight.

Say, maybe if you built a capacitor that covered a large area, it might get your desired effect, like if something were, instead of being inside of a faraday cage, inside of a hollow capacitor with a little charge. Just a thought...

Sooo, is there a "Plank length" regarding time, or is it infinitely divisible?

The actual amount of usable energy you should be able to use with a heat engine should be the related to the difference in temperature between your heat source and your heat sink.

I was thinking more along the lines of a sonar eyeball, to get higher resolution imaging through the water or through the ground.

So, a person could easily build a sound-focusing lense, right?

I know that electromagnetic waves travel slower in general through denser materials than through less dense materials. Sound waves, however, are the opposite. The formula for light refraction is the ratio of the sines of the incidence angles equals the respective speeds of light through the...

Yeah. You could have a watch or some radio device which detects which card you aren't in physical contact with anymore, and somehow communicate with you in an inconspicuous manner, like little shocks, or something. Each card could have its own IP address... then when it is taken out of the...

I'm assuming you are mentioning sound of higher frequency than 1 Khz. Almost all water in nature has small particles or bubbles in it, and sound travels through those particles at different velocities than the water around it. When sound with such short wavelengths travel through those...