Recent content by 888eddy

ok i think i get it! if this isn't right then i think I'm just going to give up for now and come back to it another day! i did understand the other explanations before, except why you couldn't just swap twin A and B's names round and get the opposite answer. but i think i have come up with...

sorry i still don't understand at all. i did look through all the other threads on this and the math.ucr.edu page and still don't understand. are you saying that the time dilation in the twin paradox is entirely due to the acceleration and there is no time dilation at all as a result of their...

i can't get my head around the twin paradox at all. so twins A and B move relative to each other and as a result, according to special relativity, from twin A's perspective twin B will of aged less but from twin B's perspective twin A will of aged less. when they meet up which one will of...

when Jill was one third as old as Jack is now, Jack was one year older than Jill was when Jack was half as old as Jill is now. Jill is 22, how old is her brother Jack? this is irritating me and i am set to waste a lot of time unless i find out how its worked out soon.

keinve. you're right, in that its possible because we just don't know. however we are much more likely to find a planet with life similar to Earth's since we know what we are looking for. if we found a planet with an atmosphere completely different from anything we have ever seen we might guess...

how far are we from detecting a moon around an Earth sized planet in another star system? i read an article recently (http://www.newscientist.com/article/mg20126932.100-why-are-the-sun-and-moon-the-same-size-in-the-sky.html") about how the moon being so close to Earth wasn't, or doesn't...

thanks a lot everyone. all of this is very useful.

they will be working on a mouse or rat brain because they are very similar to a human brain (obviously without the capacity of our brains though. the same way a slow 10 year old pc will work on the same principles as a fast modern computer) and therefore will produce useful results. a worm or...

cheers jtbell and CaptainQuasar. your probably both right. shame there's not much i can do about it except mabye change my isp.

what affects internet speed? my internet slows down significantly at night. i have done a speed test which indicates its actually faster but everything i do on the internet after around 8pm takes over twice as long. I'm assuming its a program slowing the connection and using up the bandwidth...

im not an expert by any means. i don't know much at all about climate science, I am a mechanical engineer. i read about it in the news recently; all i know is it involved germany, a giant screen, cool air, an slowing glacier melting. i'd imagine you are unlikely to find funding for such a...

we don't need to take measures to cool the planet necessarily, just slow down the negative effects. we obviously need to cut down on emmisions for a million other reasons than global warming but that's probably not going to be enough. if anything it will just slow it down. in germany they have...

i have been taught that plastic bags damage the environment because they take thousands of years to decompose. this is not an explanation though. why is it bad that they take ages to decompose? i guess animals get trapped in them and some plastics are toxic but it would seem easy to put the...

yes it should be taught in schools. climate science is very young and whatever the cause its difficult to tell whether its possible for us to reverse it. whether temperatures are goin up or not the worlds glaciers are melting at an increased rate and with 1/3 of the worlds population depending...

i know climate science is pretty inaccurate at the moment and its difficult to predict the effects of lowering carbon emissions but just as an interesting topic i was wondering roughly how many lives each wind turbine will save? what i mean is how much carbon dioxide will be saved from the...