#21 Jan 24, 2013
Books show an elevator accelerating upward. Now, imagine two elevator cabins (moving upward and downward in a uniform motion) and two light rays (coming horizontally from the outside of the cabins). All will be a problem of geography.
#22 Jan 26, 2013
Sorry, i made a mistake in above post.
Right is "geometry". Wrong is "geography".
Add your comments below
|Moment of Inertia||Feb 2||John A||1|
|Neutron anomaly might point to dark matter||Jan '18||TimGMeloche||1|
|Quantum gravity could be probed by entangled ma...||Jan '18||TimGMeloche||1|
|Gravity Hill, PA-Defying the Law of Physics||Jan '18||Stephen||1|
|Baseball vs Tennis Ball (Jan '07)||Nov '17||Ben||20|
|better safer ways of producing clean energy for... (Feb '17)||Nov '17||discountbrains||2|
|Einstein's handwritten notes sell for $1.8M||Oct '17||Pardon Pard||12|
Find what you want!
Search Physics Forum Now
Copyright © 2018 Topix LLC