browndn

yes, 2 things:

 

1) UTFSE!

2) .8 + .8 = 1.6 Not 1.8!

if i were to use the search engine, then what hell is this site for if anyone can search their question on google? please dont reply if you cant answer please. u seem to be a regular member to this site so please act mature.

Hypotherical Q: Lets say a spaceship A was travelling at .8c (C=speed of light) and space ship B was travelling at .8C too but in the opposite direction. So from the frame of reference A, doesn't it look like spaceship B is travelling at 1.6C? am i missing something here?

EDIT: it was just a typo to type 1.8C. and why would it look like it is .9somethingc?

Simply Einstein - Relativity Demystified

- Richard Woflston

Simple Terms explaining complex ideas. I mean it. He explains everything thoroughly.

such as a photon, why do they travel in a wave because is a straight line the shortest between point A to B. i know its the waves that gives them properties (like its the wavelenth that differs a xray from a gammaray) but i still dont get why they have to travel in waves?

can u freeze[pause] time at 0K? because time is relative to mass and energy and if theoretically particles stop moving at 0K does that mean you can freeze time?

i heard people talk about that you cant because gravity is still acting on it. any thoughts?

Do you have any evidence (again, I don't know) that strings are using energy to vibrate?

well i mean, if it is "vibrating" [a form of motion], it needs enrgy right? well i dont have any evidence cuz im just scratching the surface about strings.

what is the difference between a charge and energy? i dont much about this so i was just wondering because you can convert electricity [store it] and then use it for energy. like turning on a light bulb. i might be missing something here so please clarify

where do these "strings of energies" keep getting their energy from since they they are using energy to vibrate. I dont a lot about strings so this Q might sound naive.

please explain it. all i kno is that energy and matter[mass] are manifestations of the same thing and C = speed of light but what does it have to do with anything?

Why does time slow down as you approach C [speed of light]? i kinda get the time slowing at a place of gravity [due to the curvature of spacetime right?] my knowledge might sound naive.

EDIT: SORRY!!! didnt kno there was already a post on this!

i read an article on bbc where they said scientists froze a photon for about 10-20 microseconds. Doesn't this contradict einstein's theory that photon has no mas because if you are able to stop a photon, then it should have some type of rest mass and if it has rest mass, then it can't possibly achieve the "speed of light". Please correct me if i am wrong. And also, if light can be slowed down to a speed of bullet, then how can you call light a constant and how can we rely on light to tell us distances in space since it can slowed down drastically.Sorry if it's a bit long.

Article: http://news.bbc.co.uk/2/hi/science/nature/3308109.stm

http://www.livescience.com/php/video/player.php?video_id=itm1005_freezinglight