Can cosmic rays be used for interstellar propulsion? I have read in wikipedia that cosmic rays are 90% protons, so positive charged, with appreciable...

Earlier tonight I wrote this, thinking in terms of triple integrals, line integrals, vector fields. Perhaps what I really am wanting is a triple...

On Dec 6, 8:45 pm, waitedavidmsphysics wrote: I've fixed a typo missing prime and reuploaded. The new URL is http://www.youtube.com/watch?v=8stc9OtTUOA ...

On Dec 2, 6:05 pm, wrote: I have just created a new YouTube video explaining Special and General Relativity. ...

Well, I am stuck in this chapter, because it is a difficult problem. It has never been resolved and I reckon I am going to resolve it. Already I have unified...

'Faster-than-light' observations reined in - Technology & Science - CBC...

Weighs in at just 2.4 Earth...

On Dec 2, 6:05*pm, wrote: I have just created a new YouTube video explaining Special and General Relativity. ...

The ring I spoke of in the previous post was in this website: --- quoting from --- http://spider.ipac.caltech.edu/staff/jarrett/papers/LSS/ The third layer...

http://www.guardian.co.uk/commentisfree/2011/nov/23/faster-speed-of-light-boxers?newsfeed=true Jim Al-Khalili: "I'd love it if neutrinos really have exceeded...

The particle is unecessary when waves must be absorbed. There is no need for a light particle when waves must always be absorbed. Einstein questioned what he...

Fortunately in the last chapter of the Solid Body Rotation, I had to rewrite that entire chapter because I learned an important thing in this edition. I...

http://www.bbc.co.uk/news/science-environment-15754786 With the discovery that there might be a 100km thick ocean below a 30km thick layer of ice, I get the...

On Dec 3, 5:25*pm, Tom Roberts wrote in sci.physics.relativity: But certainly "length contraction" and "time dilation" in...

This is a first post to this NG, so apologies if my question has already been addressed. And if so, I would thank you for directions to such previous...

You know it is hard to replace gravity with positron-space and think entirely in EM as the force, and it is hard because we are all so used to gravity. But...

Chapter 14: Dirac's Ocean of Positrons = Space (and tells us what gravity is) For much of the 20th century in physics, there was a massive attempt to unify...

http://arxiv.org/ftp/arxiv/papers/0910/0910.5847.pdf Jean-Pierre Luminet: "Special Relativity makes a different assumption, namely that the speed of light in...

You'd think the rocket scientists posting to sci.astro.amateur would be content just posting messages about spaceships, Mars and maybe even extraterrestrials...

Agreed that grasping the intricacies of physical phenomena and developing theories thereof, is a slow and tedious process which forms an integral part of our...