NoxKitsune (November 30, 1999 at 12:00 am)

Actually, my physics teacher DID show this video in class.

GoldAK47 (November 30, 1999 at 12:00 am)

Wow that is awesome...

Johnak4715anos (November 30, 1999 at 12:00 am)

I'll ask my teacher today and get back to you x]

whoweare (November 30, 1999 at 12:00 am)

Thanks for the reply. However, with the tyre(I'm British, lol) example, there was an actual reason.. "because you always let air escape", is there an actual reason for it occuring in this situation or is it more "just because the principle says so"? Basically, is there an actual reason the results automatically change?

GC8 (November 30, 1999 at 12:00 am)

What's the difference between a camera and a human eye if both are being used by a human?

Furthen (November 30, 1999 at 12:00 am)

Well put. This should be shown in classes =) Highly understandable.

Johnak4715anos (November 30, 1999 at 12:00 am)

It's Heisenberg's uncertainty principle: When you try to measure something, you will automaticly change the results of what you're measuring. For instance: When you measure the air pressure inside a tire, you always let a little amount of air scape from it. Therefore, the pressure you measured is a little lower than it would be.

LazlosPlane (November 30, 1999 at 12:00 am)

Very funny.

whoweare (November 30, 1999 at 12:00 am)

So, how does light know it's being observed?

jazznaz (November 30, 1999 at 12:00 am)

The electron propogates as a probability wave (with wavefunction determined from Schrodinger's equation), and only exists in a localised state (as a particle) when measured. There is no trajectory from the gun to the screen, it simply isn't defined by physics... Waves do not have trajectories.