Short Words to Explain Relativity. So, have a seat. Put your feet up. This may take some time. Can I get you some tea? Earl Grey? You got it. Okay. Okay. Say you woke up one day and your bed was gone. Now, let's add the bed back. Now, if I took the bed back but gave you the sun -- just you and the sun in the void, now -- I'll bet you'd say that the sun is so big, next to you, that odds are you move and not the sun. In a word, you can't find any one true "at rest". Aha, but now wait! Well, and so we went to test this idea out. To say that we were less than glad to find that out is to be kind. Old Al, he came out the blue and said, "Not only do rays move at c if what puts them out is held fast or not: they move at c even if you are held fast or not.
" But for that to be true, then time also has to get in on the act. I can hear you say, "No way. So you see, when you give up on the idea of a one true "at rest", then you have to give up on the idea of a one true time as well! What a snag, eh? But old Al's mind was set. A-yup. Superposition of Waves. Sciences 10 most beautiful experiments. Fusion is Easy-a homemade tabletop nuclear. Eric Weissteins World of Physics. Physics Flash Animations. We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing.
Also included is the minimum version of the Flash player that is required; the player is available free from In addition, I have prepared a small tutorial in using Flash to do Physics animations. LInks to versions of these animations in other languages, other links, and license information appear towards the bottom of this page. The Animations There are 99 animations listed below. Other Languages and Links These animations have been translated into Catalan, Spanish and Basque: En aquest enllaç podeu trobar la versió al català de les animacions Flash de Física.
These animations were written by David M.