Testing Einstein's Universe 2/3

Part 2 of Testing Einstein's Universe from the Stanford University Gravity Probe B website- http://einstein.stanford.edu/Media/

Written, Directed & Produced by Norbert Bartel, Professor of Astrophysics & Space Sciences, York University, Canada, September 2003

Category:

Science & Technology

Tags:

• Albert
• einstein
• general
• theory
• of
• relativity
• nasa
• stanford
• university
• Francis
• Everitt
• Kip
• Thorne

[VikingNightmare]

@Spekkof Yep well i know what temperature means, from my language temperature in physics is referred to as thermal agitation. so that's somewhat in the name. The interesting part scientists said is that the particles when they stop moving they become long, like straws which is kinda hard for me to imagine, not that i would be some kind of top scientist, i am sure regarding temperature i am missing some knowledge so i bow before the researcher's statement... :D

[Spekkof]

@VikingNightmare Well the Absolute Zero temperature would mean that the particles would no longer have kinetic energy, which means that they have completely stopped their movement. That's what temperature basically is, the movement of particles. If there is no movement, there is no heat and you can't move slower than being completely stopped :) (although I'm sure quantum physics will beg to differ)

[VikingNightmare]

Regarding this clip i have 2 questions:

First: Why should there be a an absolute zero temperature? This is actually -273,15 ^C or 0 ^K or? Don't scientists say that when 0K is achieved then stuff stop to vibrate and thus stop to exist? Hence the saying that all is a mere vibration... I am not an expert i am just telling/asking questions here to people much better prepared in physics... Call me a noob but i just had to ask :)

[hovsec]

some things i dont know what they are referring to, id have to be a scientist in that knowledge but still nice experiment

[Typho0n86]

Wont the earth's magnetic field interfere with the gyroscope? what happens if the earths magnetic field moves... its been knowen to change!!!

[TruthIsUniversal]

I would say that it's most likely accounted for, so they're looking for a change in that, other than hardly affecting it in the first place.

I don't think they're going into great detail with this explanation, but enough so that people can get the basics of it.

[PGGuderian]

very nice docu

[gadzometer]

This may be an ignorant question on my part but wouldn't the act of placing the loop around the gyroscope (which I assume is measured via an induced current) produce an electromagnetic force opposing the direction to the change in direction of the gyro?

Or is this force so minute that it doesn't effect the experiment significantly?

Not saying that a billion dollar research team with some of the best experts in the field haven't thought of this, it is just for my curiosity.

[ssnatcherss]

Amazing!

[rhov233]

zschero