iNow Posted August 10, 2007 Share Posted August 10, 2007 Okay... so what's your question? Online essays about what? Link to comment Share on other sites More sharing options...
Shygirl Posted August 10, 2007 Author Share Posted August 10, 2007 NOW.... the big yellow thing.. is light.. the light is moving east at C the lines in pink represent the number of light years in distance they are from the light at that moment in time the green circle called A represents a spaceship... its moving TOWARD the lgiht at the speed of light........ the green circle called B represents a space ship... its moving AWAY from the light at the speed of light........... explain what happens in this pls... BE SPECIFIC PLS Link to comment Share on other sites More sharing options...
Daecon Posted August 10, 2007 Share Posted August 10, 2007 What about it do you want explaining? You seem to have covered everything. Link to comment Share on other sites More sharing options...
Shygirl Posted August 10, 2007 Author Share Posted August 10, 2007 UM.... like i said in the above post... explains what happens.... Link to comment Share on other sites More sharing options...
insane_alien Posted August 10, 2007 Share Posted August 10, 2007 well, we can't. its not a possible physical condition(spaceships can't move at the speed of light) so applying the laws of physics is a useless effort. pop on IRC. you can get a realtime discussion there. Link to comment Share on other sites More sharing options...
Klaynos Posted August 10, 2007 Share Posted August 10, 2007 well, we can't. its not a possible physical condition(spaceships can't move at the speed of light) so applying the laws of physics is a useless effort. pop on IRC. you can get a realtime discussion there. seconded, come on IRC this evening and we'll give you a tutorial on SR if you want And yeah the spaceships can't go at the speed of light, often times people use 0.5c and stuff because at that kind of speed relativity really does matter... Link to comment Share on other sites More sharing options...
Shygirl Posted August 10, 2007 Author Share Posted August 10, 2007 you guys r like my dad... i dont no wut IRC is... and ok so lets pretend the ships wer going .5C go. edit: its the forum chat i hav to go 2 my frends house at 2 which is 2 hours from now.. and i probly wont b home untill like 8 or 10 PM.... what time are yous on? Link to comment Share on other sites More sharing options...
iNow Posted August 10, 2007 Share Posted August 10, 2007 UM.... like i said in the above post... explains what happens.... Go make yourself some popcorn, get a highly caffeinated soda like Jolt, and enjoy. Here ya go: http://en.wikipedia.org/wiki/Introduction_to_special_relativity This article aims to give a gentle, non-technical introduction to the theory based on geometrical intuition and explain some of the terminology and formalism involved. A more advanced, encyclopedic description will be found in the parent article Special relativity. It will be helpful to approach relativisic mechanics by first studying some properties of the classical (Newtonian) picture. Animations: 1. http://www.upscale.utoronto.ca/PVB/Harrison/SpecRel/Flash/MichelsonMorley/MichelsonMorley.html 2. http://faraday.physics.utoronto.ca/PVB/Harrison/SpecRel/Flash/TimeDilation.html 3. http://faraday.physics.utoronto.ca/PVB/Harrison/SpecRel/Flash/LengthContract.html 4. http://faraday.physics.utoronto.ca/PVB/Harrison/SpecRel/Flash/ContractInvisible.html 5. http://faraday.physics.utoronto.ca/GeneralInterest/Harrison/SpecRel/Flash/Simultaneity.html 6. http://faraday.physics.utoronto.ca/PVB/Harrison/SpecRel/Flash/TwinParadox.html 7. http://www.upscale.utoronto.ca/GeneralInterest/Harrison/Flash/ClassMechanics/Foucault/Foucault.html 8. http://faraday.physics.utoronto.ca/PVB/Harrison/GenRel/Flash/Precession.html Link to comment Share on other sites More sharing options...
Cap'n Refsmmat Posted August 10, 2007 Share Posted August 10, 2007 And don't be daunted by big words - pause and take the time to work things out. I often find that when reading a book on physics, it's worth it to stop every once and a while and try to explain things to yourself to make sure you really understand what's going on. I'd recommend the book Fabric of the Cosmos, by Brian Greene, for a decent introduction into relativity and quantum physics. If you come into the chatroom (you might find that few people actually talk at times, but try a few times and you'll find someone who will explain things) we can try to help there too. Link to comment Share on other sites More sharing options...
Daecon Posted August 10, 2007 Share Posted August 10, 2007 I'd recommend the book Fabric of the Cosmos, by Brian Greene, for a decent introduction into relativity and quantum physics. I'd also recommend The Elegant Universe by the same author, to which Fabric of the Cosmos is the follow-up book. (Plus, Brian Greene is very cute!) Link to comment Share on other sites More sharing options...
someguy Posted August 10, 2007 Share Posted August 10, 2007 relativity at first is really hard to understand. it doesn't seem to make sense until you start putting the pieces together. (by the way the earth isn't round it is elliptical, i think because it is spinning it is wider at the equator, that's why it is better to send stuff into space from near the equator as opposed to somewhere else and that's why the us sends stuff into space from florida.) i forget how they figured out that light was constant, but from knowing that, with a thought experiment you can deduce that therefore, time must change, according to your speed. time is tightly connected to motion. if nothing in universe moved there would be no time right? you need motion for time and vice versa. actually the faster you move the faster you are carried through time. most people will tell you time slows down for you but though that's not wrong i find it is misleading. since time changes for you and you measure speed using time (m/s or whatever) if time changes then it is possible that something like light will always seem to you to be moving at the speed of light. and that's what happens. we know we are not moving at the speed of light because only light can move that fast. since we have mass we would need an infinite amount of energy to get us moving that fast. the faster you go the more massive you get, the more massive you get the more energy you need to accelerate you. eventually, in order to accelerate you just a tiny little amount you would need an extremely huge amount of energy. because of this you could never attain the speed of light. but we cannot really know how close to the speed of light we are moving at. and that question doesn't really make any sense if you think about it. there is no lower boundary to compare your speed to in order to find out how close to the speed of light you are moving. that's why they call it relativity, you need something to define yourself to in comparison. you can't use light because it always moves at the same speed compared to you. you need to choose something else in relation to you to define your speed. like earth or something. but as you know earth is moving.. but how fast? well... compared to what? it's all relative. the universe is all energy, everything is energy. people often will speak of intangible things as "some sort of energy" like when talking about psychics or god or spirits or something. but this is a misinterpretation of energy. energy is all things and is everywhere. matter is energy just like electricity is. they are just different forms of the same thing. just like two different elements are just electrons and protons and neutrons. they are different forms of the same thing. a void of energy would be nothing and nothingness is not a thing and can't be found since if it could be then it would be something and thus not nothing. there is no nothing. energy is that which exists. e=mc^2 shows how much energy matter is. it's alot. c = 3.0 * 10^8m/s that's 3 and then 8 zeros after it. m stands for mass e for energy. so 1 kg is 1*3.0*10^8 kj of energy which is alot. nuclear reactions transform matter into other forms of energy. since matter is such a high concentration of energy you can release all of that energy with a nuclear explosion and you have a very big boom, nuclear bombs. mass somehow bends the universe, space-time, around it. like what you were saying. a bowling ball in a trampoline except 3d. other objects traveling in space-time follow the bend and fall into the thing causing the bend. they too are bending space-time but how much depends on how much mass they are. even light needs to follow the shape of the fabric of space-time, and that's why light can be bent by gravity even though it has no mass. Link to comment Share on other sites More sharing options...
Klaynos Posted August 10, 2007 Share Posted August 10, 2007 i forget how they figured out that light was constant Maxwell realised from the maxwell equations which lead lorentz to write his equations... Link to comment Share on other sites More sharing options...
whaThehell Posted August 16, 2007 Share Posted August 16, 2007 haha i dont know half of what you guys are talking...and im 15 as well...nobody in sch has any interest in relative physics except me... off topic...x games 13 is on WOOT!! sry i had to write that...haha i seriously wanna learn relativity but nobody has a clue...so if anyones willing to help me i would be frggin happy... sry shygirl..im advertising on your thread or sumthing.... Link to comment Share on other sites More sharing options...
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