granpa

during the acceleration some strange things happen. this is what lead to the idea general relativity. read the thread that I gave a link to

I created this thread specifically for beginners to relativity http://www.physicsforums.com/showthread.php?t=314080

how would we know?

http://www.newscientist.com/article/mg21228404.200 could neutrinos from the sun be affecting the experiment?

but of course 'matter dominated' isn't the only option http://en.wikipedia.org/wiki/Friedmann_equations#Useful_solutions I favor w = -1/3 and therefore a(t) = t

why does your response remind me of this?

how would we know?

it means you have to factor in relativity of simultaneity http://en.wikipedia.org/wiki/Relativity_of_simultaneity each observer will also see the other one as shrunk. this is possible because the length of an object is the distance from front to back at one simultaneous moment.

http://math.ucr.edu/home/baez/physics/Relativity/SR/rocket.html

http://en.wikipedia.org/wiki/Logic_programming http://en.wikipedia.org/wiki/Prolog http://en.wikipedia.org/wiki/Fuzzy_logic

no.

think in terms of masses and springs

http://news.sciencemag.org/sciencenow/2011/11/scienceshot-amoeba-sized-insect.html?ref=hp When the scientist compared the neurons of adult and pupae fairy wasps, he discovered that more than 95% of adult neurons lack a nucleus.

Dude. I didnt name the video

if there is a control center in a cell then neurons should be packed full of it since that is their only job theres not much in axons and dendrites except microtubules. the body of teh neuron isnt much bigger than the nucleus itself. http://www.physicsforums.com/showthread.php?t=257289 http://www.physicsforums.com/showthread.php?p=1897203#post1897203 http://www.physicsforums.com/showthread.php?p=1897408#post1897408 something else to consider, that many people dont know, is that the cell can continue to fire 100,000's of times after the ion pumps that 'recharge' the cell have stopped working.

due to gravitation time dilation light will move slower in a gravity well just as it move slower through glass. but if you were in the gravity well with the light you would be slowed too so you wouldnt notice the slowing of the light. you would both be slowed equally.

all I can say is that this is one impressive transistor

but the core becomes denser

http://news.sciencemag.org/sciencenow/2011/11/scienceshot-amoeba-sized-insect.html?ref=hp the fairy wasp (Megaphragma mymaripenne) compared to a paramecium and amoeba

for those that actually want to learn here is an explanation showing how general relativity is derived from special relativity. math.ucr.edu/home/baez/physics/Relativity/SR/rocket.html The Relativistic Rocket Below the rocket, something strange is happening... everything in the universe is falling "below" the rocket, but never receding any farther than a distance of -c2/a as measured by you. It all piles up just short of this distance, asymptoting to a plane called a horizon. You see this horizon actually form as the rocket accelerates, because there comes a time when no signal emitted from "below" the horizon can ever reach you. Everything falls toward that plane, and as it does so it begins to redden, due to the increasing red shift of its light, because you are accelerating. Finally it fades out of visibility. In fact, as anything gets closer to the horizon, it ages more and more slowly; time comes to a complete halt there.

you were trying to prove that an object cant escape from the event horizon. the correct solution is, as I said before, that gravitational time dilation causes time to stop at the event horizon.

you can use the wrong equation if you want to but I dont see how you can prove anything with it. we know that the actual escape velocity at the event horizon would be less than c due to relativistic effects.

pardon me but I believe that your first equation is the equation for nonrelativistic escape velocity obviously if the velocity is near the speed of light then you would need to use a relativistic equation.

whether you said it or not people could get that impression from what you said. I thought it was obvious who I was responding to