relativity

Category archives for relativity

“The only man who never makes a mistake is the man who never does anything.” -Theodore Roosevelt Scientists make mistakes. We fail. We have our intuition lead us astray; we synthesize information in ways that lead to catastrophically wrong predictions. Whether we make sloppy, calculational errors, have oversights in what we consider, or whether we…

“The very closest stars would require many years to visit, even traveling at the speed of light, which is impossible according to Einstein’s theory of relativity. Today’s fastest spaceships would require 200,000 years to travel to Alpha Centauri, our closest bright star. The energy required to send a hundred colonists to another star, as Frank…

“Each ray of light moves in the coordinate system ‘at rest’ with the definite, constant velocity V independent of whether this ray of light is emitted by a body at rest or a body in motion.” -Albert Einstein, 1905 The more kinetic energy you impart to something, the faster you go. But there’s a limit:…

“It is old age, rather than death, that is to be contrasted with life. Old age is life’s parody, whereas death transforms life into a destiny: in a way it preserves it by giving it the absolute dimension. Death does away with time.” -Simone de Beauvoir If you want to describe your location here on…

“Each ray of light moves in the coordinate system ‘at rest’ with the definite, constant velocity V independent of whether this ray of light is emitted by a body at rest or a body in motion.” -Albert Einstein, 1905 The idea of relativity, that there’s no “absolute rest frame” where the laws of physics are…

How do photons experience time? (Synopsis)

“Everyone has his dream; I would like to live till dawn, but I know I have less than three hours left. It will be night, but no matter. Dying is simple. It does not take daylight. So be it: I will die by starlight.” –Victor Hugo Whether you’re at rest or in motion, you can…

“Its continuing mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no one has gone before.” -Star Trek, in many incarntions When Star Trek debuted 50 years ago, we didn’t know that there would be regions of the Universe that were forever inaccessible to humanity, nor…

“We must free ourselves of the hope that the sea will ever rest. We must learn to sail in high winds.” -Aristotle Onassis Welcome back to the end of another big week at Starts With A Bang! There’s been a lot of fantastic stories that have gone down, including: Can stars escape from the galaxy, with planets…

“Astronomers are greatly disappointed when, having traveled halfway around the world to see an eclipse, clouds prevent a sight of it; and yet a sense of relief accompanies the disappointment.” –Simon Newcomb Next year, on August 21st, 2017, millions of Americans will delight in the first total solar eclipse to go from coast-to-coast in 99…

“For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.” -Leonardo da Vinci The Universe is an awfully big place, but how certain are we that we couldn’t travel in a straight line for a very long…