Recent content by Raekwon

http://en.wikipedia.org/wiki/Standard_deviation#Rules_for_normally_distributed_data

In short, yes. Any interaction with any field will cause decoherence. In this case, it'll be very weak.

It's a confidence level, level five is 99.99994%

Gravity does act on roots yeah, but there's an Orchid in my house and the roots are growing up out of the pot, about 9 or 10 inches too, so it will depend on the type of plant.

Gravity plays a part towards them always growing down on Earth, but people tend to think that it is gravity acting on the roots, this is not that case, you can get J rooted seedlings in cases of over or under supplies of water for example. Either way, roots of a plant will always move towards...

Only by a little? That would depend where you are, for example the moon has about 17% of the gravity that the Earth does. Because there is far less gravity, you will weigh far less. Jumping high is because of reduced gravity. "hanging" is just being in a state of freefall, everything falls...

What if we have: p2 = E2/c2 - m2c2 (E2 = p2c2 +m2c4) If we apply energy to it instead of mass, we get: p = E/c Therefore: p2 = p2 - m2c2 Therefore: m2c2 = 0 We know c is more than 0, so m is 0 So, E = mc2/sqrt(1 - v2/c2) will be the only way a particle can have a non-zero mass.

So when it's resting (never) it has zero mass, yet when it's moving at the speed of light it has mass - how much? If it has mass does it have weight? Sorry for the dumb questions but google doesn't help, I found this and I'm more confused...

This is what never understood, if energy is mass, what is the photon? Why is the photon massless?

Exactly my thoughts, but someone said because of E=mc2 that it would weigh less, which got me doubting myself, I guess they must have thought that light is massless and disregarded the conservation of mass. Thanks.

Fr = μN Fr - resistive force of friction μ - coefficient of friction N - normal force (gravity/applied pressure)

There is an empty container on some weighing scales. It is filled with electrons & positrons, the lid is closed and a reading of the weight is taken. Now they go boom and are turned into gamma rays... Lets say the box does not let the rays escape, instead are reflected back inside the...

That's what I said? Okay maybe I should have separated it a little, but I meant as the gas - hence just saying Helium rather than State II, that's also why I used a balloon as an example, I'm sure we all know nobody fills balloons with superfluids :P

Misr, are you trying to claim there is somewhere that has absolute zero gravity?

Helium-4 is only a superfluid when cooled to below its lambda point, 2.17 Kelvin (271 C), at which point it enters the Helium II state, yes it will crawl up walls, yes it can seep through glass. Helium is generally used to test leak rates of vacuum chambers and such because it has such a small...