Well I have been reading some works on general relativity and the big bang, and I still am a bit confused concerning this issue. Our universe is expanding. Play it...

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Where Is The Kinetic Energy of a Bullet Stored? When a bullet is fired, an explosive charge imparts kinetic energy to the bullet. That kinetic energy travels with the...

(Note about followups: I couldn't post to all five ng-s, so I picked 3.) Going up and down will take too much time . Planes manned by Jihadis will destroy these...

The transformation equations of special relativity state very explicitly that the value physicist A assigns to any physical variable differs from that assigned by physicist B...

Just me again, I had a long Thanksgiving conversation with a family of science freaks of differening talents and I got a **** load of questions. Please forgive my ignorance...

I am looking to speak to moderator, but I do not know who it is? Phyics.relativity and Physic.relativity.research. Is there a area that is not moderated that I could voice...

Where Is The Kinetic Energy of a Bullet Stored? When a bullet is fired, an explosive charge imparts kinetic energy to the bullet. That kinetic energy travels with the...

Never has so much tax money been spent on a physics theory (M -Theory in "Elegant Universe" on NOVA), aside from "hot fusion", with so little contact with experimental...

Thanks to Brian Josephson for making me aware of Susskind's paper "The Anthropic Landscape of String Theory" cited in Brian's http://arxiv.org/html/physics/0312012/ Lenny and...

http://www.fortunecity.com/emachines/e11/86/beneath.html "Maybe the nature of reality is hidden from us.Everything is emergent but we'll never know what from." This...

Is this correct - No 2 objects can move apart faster than the speed of light. If they start at the same point and move away from each other, then after X years they cannot...

An alien spaceship entered earth's atmosphere and zapped out away at light speed. That spaceship radiated a powerful electromagnetic pulse every relative c-meters...

Feynman's book "Six Not So Easy Pieces" (1997) pg. 68 has a nice derivation that may provide a place to look for dark energy and dark matter. The following equation merely...

Did you know you can buy land on the moon? This site claims that there are already over 1,125,000 lunar land owners from 176 countries around the world. To date more than...

I know you can contract indices on the Riemann tensor to get the Ricci tensor. In the book I am using, the Riemann tensor is written as R^a_bcd where the b and c indices have...

Between Einstein and Newton On the webpage http://www.ajnpx.com/html/Science/Einstein-on-Newton's-contributions-to-physics.html I let Einstein tell what he thought were...

All should read this: www.maerkische-ingenieure.de A novel mathematical approach to elementary physics --

Hello there, I'd like to know what kind of education and background in physics you guys have. If studied physics or math or anything else, what university? I myself am...

Recently I was in a discussion with Paul B. Andersen where we were discussing relative motion and energy. Paul claims that there is a loss of energy wrt my experiment...