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What is the theory of relativity?
What did Albert Einstein say about relativity?
What is a special theory of relativity?
What is a result of special relativity?
Special relativity states that the laws of physics, and thus the universe is the same for all equally “fast” observers. In the vacuum of space, the speed of light is a constant independent...
- Rock The Boat
- Relativity in Motion
- A Massive Theory
- Lost in Space?
- What Do We Know For Sure?
When most people think of relativity, their mind immediately goes to Albert Einstein, and with good reason — his theories of general and special relativity revolutionized 20th-century physics. But the roots of relativity were planted a long time ago. Copernicus was the first to propose that the nature of reality depended on the position of the obse...
Your friend standing on the shore as you sail away on your cruise could clearly tell that the boat is moving, though. So it looks like you can’t tell the difference between moving and standing still unless you have something outside of yourself to compare it to. This is what it means to say that the boat’s motion is relative — it depends on who is ...
Mass, just like motion, is relative — if a person were to move past you at a really high speed, he would appear to get more massive (but he wouldn’t feel himself getting more massive … he would see you as getting more massive!). And how much more massive something appears is related to how fast it’s going. The closer it gets to the speed of light, ...
You’ve probably heard that traveling at close to the speed of light causes some pretty weird things to happen. It can make people look more massive and like they have more energy, but did you know it can also make space contract and time slow down? Clocks actually tick slower as you approach the speed of light. So if you went into space at the spee...
Just like the person on Galileo’s hypothetical ship, we have no way of knowing if we’re moving — or if we’re more massive or our time has slowed. In our own view, everything always looks right and normal. It’s the things moving and existing relative to us that will appear massive or squished or distorted. With all these different frames of referenc...
Apr 13, 2018 · Albert Einstein is famous for his theory of relativity, and GPS navigation and nuclear energy would be impossible without the equation e=mc2. How our ideas about space and...
- 1895: Running Beside a Light Beam. By this point, Einstein’s ill-disguised contempt for his native Germany’s rigid, authoritarian educational methods had already gotten him kicked out of the equivalent of high school, so he moved to Zurich in hopes of attending the Swiss Federal Institute of Technology (ETH).
- 1904: Measuring Light From a Moving Train. It wasn’t easy. Einstein tried every solution he could think of, and nothing worked. Almost out of desperation, he began to consider a notion that was simple but radical.
- May 1905: Lightning Strikes a Moving Train. Einstein’s revelation was that observers in relative motion experience time differently: it’s perfectly possible for two events to happen simultaneously from the perspective of one observer, yet happen at different times from the perspective of the other.
- September 1905: Mass and Energy. That first paper wasn’t the end of it, though. Einstein kept obsessing on relativity all through the summer of 1905, and in September he sent in a second paper as a kind of afterthought.
Nov 25, 2023 · It means that mass and energy are related and can be changed from one to the other. Mass is basically the amount of material an object contains (which is distinguished from weight, which is the force of gravity on an object). Mass changes depending on the object.
The theory of relativity usually encompasses two interrelated physics theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity .
Relativity, wide-ranging physical theories formed by the German-born physicist Albert Einstein. Special relativity is limited to objects that are moving with respect to inertial frames of reference. General relativity is concerned with gravity, one of the fundamental forces in the universe.
