Recent content by Coughlan

Hi, As I understand it, if you have a piece of matter (hydrogen) and a piece of antimatter (anti-hydrogen) and they interact with each other they annihilate. What if your matter was Helium and your "antimatter" was anti-hydrogen? or the other way around what if your antimatter was antihelium...

Ha! I knew I missed something big. And yea I was so distracted I didn't even pickup on the Photon. Thank you Civ for clearing this up; it makes much more sense. So do you think that we could use this magnetic field theory to approximate what happens in real space on a much much smaller scale...

Hello PF community! While reciently reading another thread this paper was posted as a link: http://arxiv.org/ftp/cond-mat/papers/0602/0602591.pdf now about 5 pages in it stated that the authors found a wave length and mass for a graviton? I did not even know they were proven to be...

thank you jtbell. I will look when my boss isn't here!

...I was afraid someone was going to say that. Unfortunately I couldn't do Tensor Calculus to save my life. As a matter of fact I'm barely hanging on with regular calculus. So I guess I'll just have to take your guys' word for it. Thank you for the prompt responses! :)

speed of light is the only absolute I can think of. I can see where you might think relative motion but what if the "motion" were "quick" enough to cause time dilation. Well then distance / time would become a quagmire. So my vote is for the speed of light only! :rolleyes:

Wow thanks for the response. I had no idea that this topic was so unclear. I figured that I was just missing something. I still don't know what to think but it has been a great thought provoking experience non the less!

Well what I was referring to was this. In order to calculate a relitivistic mass you need to take into account its energy. Thus the fast you go the more mass you have. So what if this high speed object with its new mass passes a stationary object half its weight? What happens? Is the second...

I've been puzzling over this for quite sometime and have not been able to find it anywhere here which is stunning. What if you had a structure that was moving fast enough to have it's relativistic mass be...1 kg for now. And we had this 1 kg mass zipped by something that was 0.5 kg for sake of...

...um I'm not trying to derail the convo here and if you'd rather me start a new thread than I will but I must ask one question: the "you" and "I" prospective makes no sense to me. After a choice has been made why would one of the out comes be special? I don't have a good working idea of...

why not? i mean I'm sure that math is way over my head but has it been disproved? or just not accepted or what? :bugeye:

I would have to think that black holes are hot. Imean if they exert enough gravity to not allow even photons to escape then, there must be a massive amount energy present, therefor hot.

In the Wheeler-Feynman absorber theory I understand that the gammas rays terverse time for and aft, but is that between their destinations, or the next closest particle. What I mean is what if you had a sea of uncharged particles, and two charged particles 'jiggling' with a set distance between...

Spin is how you determine the quantum state of a particle. An interesting fact is that fermions or particles that have spins of even numbers like 1/2 3/2 etc, must rotate through 360 degress its quantum state is measurably different than when it started. If it rotates another 360 degrees its...

wow i think there is too much thinking going on here...The question was, can anything ever have zero (none, null, 0) velocity movment positional change...the answer is sure, provided you meet this one small thing...Figure out a way to stop the millions of millions of trillions of strings that...