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  1. Einstein’s Relativity Explained in 4 Simple Steps

    www.nationalgeographic.com › science › article

    May 16, 2017 · Albert Einstein’s theory of relativity is famous for predicting some really weird but true phenomena, like astronauts aging slower than people on Earth and solid objects changing their shapes at...

  2. Einstein Theory of Relativity Simplified Explained - HRF

    healthresearchfunding.org › einstein-theory-of

    Einstein Theory of Relativity Simplified Explained Einstein’s theory of relativity incorporates two components: special relativity and general relativity. Special relativity involves how the basic particles of the universe interact with one another. It describes what happens in the physical world, with the exception of gravity.

  3. A Simplified Introduction to Einstein's Theory of Relativity

    interestingengineering.com › simplified
    • Technically Speaking
    • Thinking Outside The Box
    • It's All Relative
    • Mass, Energy and The Speed of Light
    • Einstein's Legacy

    When we refer to the "Theory of Relativity" what we actually mean is general relativity. Special relativity is a "special case" of general relativity. The combination of these two principles helps explain many subjects varying from the motion of the planets, the effect of gravity on light to the existence of black holes. 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 of any observer. But what about acceleration and gravity? Einstein spent a decade musing on this. In 1915, he triumphantly produced his General Theory of Relativity. He determined that massive objects in space will cause warping or distortion of space-time which we all "feel" as gravity.

    Einstein, with his unusual way of thinking, assumed that experimental observations were correct. This was the complete opposite of his contemporaries' thoughts. In the late 19th Century, physicists were all searching for something called the "ether". Ether was believed to be the medium that light traveled through. It had become, in essence, the quest for the holy grail. Einstein realized that his peers' obsession with the task was getting in the way of progress. His solution was to simply remove it from the equation. He assumed the laws of physics would work regardless of how things were moving. A strategy that did not conflict with what experimental and mathematical data has revealed. In 1905, Albert Einstein developed his Special Theory of Relativity. His groundbreaking work invalidated centuries of accepted scientific thinking, as well as changing how we perceive the world around us. As its name suggests this theory is only applicable for special cases, i.e. when both objects are...

    Now, imagine you are in a spaceship with a laser in your hand. The laser beam shoots directly up to the ceiling, strikes a mirror and gets reflected back to the floor into a detector. Remember now that the ship is in motion, let's say at around half the speed of light. Relativity states that this move makes no difference to you, you can't "feel" it (just like on Earth as it is spinning on its axis and hurtling through space around the sun). But here comes the twist: An external observer, however, would witness something very different. If they could "see" into your ship, they would notice that the laser beam travels "up" at an angle, strikes the mirror and then travels downwards again at another angle to hit the detector. The observer would notice that the light path would be longer and at a more pronounced angle than you would observe in your ship. More importantly, the time taken for the laser to reach the detector would be different. Given that the speed of light is constant, how...

    Einstein certainly didn't rest on his laurels. Also in 1905, he applied his principles of relativityto produce the famous equation e=mc2. This innocuously simple equation expresses the fundamental relationship between mass (m) and energy (e). Pretty neat. This little equation found that as we approach the speed of light, c, the objects mass balloons. So you get to travel really fast but your mass increases in relation to your speed. Bummer. At its extreme, if you were traveling at the speed of light both your energy and mass would be infinite. As you already know, the heavier the object, the harder it is; thus more energy needed, to speed it up. So by this token, it's impossible to exceed the speed of light.

    Until Einstein, mass and energy were seen as completely separate things. His work proved that the principles of the conservation of mass and energyare part of a bigger, more unified conservation of mass-energy. Matter, therefore, can be turned into energy and vice versa due to the fundamental connection between them. That is, frankly, amazing. To summarize, firstly, there is no "absolute" frame of reference, hence the use of the term "relativity". Secondly, the speed of light is constant for whoever measures it, whether in motion or not - I know crazy right? Lastly, the speed of light cannot be exceeded, it is the universal "speed limit". Got it? Great. No? Don't worry if you didn't, it is, by its very nature, counter-intuitive. The greatest discoveries in science are often found in the realms outside of our "common sense". Viadummies.com

    • Christopher Mcfadden
    • 3 min
  4. Theory of relativity - Simple English Wikipedia, the free ...

    simple.wikipedia.org › wiki › Theory_of_relativity

    From Simple English Wikipedia, the free encyclopedia The theory of relativity was developed by Albert Einstein in the early 1900s. There are two theories of relativity. The first is special relativity and the second is general relativity.

  5. Apr 13, 2018 · When the theory of relativity appeared in the early 1900s, it upended centuries of science and gave physicists a new understanding of space and time. Isaac Newton saw space and time as fixed, but...

    • 3 min
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  7. Theory of Relativity explained in simple words – Astrogeekz

    astrogeekzco.com › 2018/08/18 › theory-of-relativity

    Aug 18, 2018 · ‘Theory of Relativity’ is a generalized term used for two different classes of theories given by Albert Einstein namely special relativity and general relativity. General relativity was originally published by Albert Einstein in the year 1915.

  8. Einstein's theory of general relativity | Space

    www.space.com › 17661-theory-general-relativity

    Einstein's Theory of General Relativity Einstein's theory of general relativity predicted that the space-time around Earth would be not only warped but also twisted by the planet's rotation....

  9. Theory Of Relativity Simplified | Popular Science

    www.popsci.com › read › theory-of-relativity-simplified

    theory of relativity simplified, ... efforts to construct his general theory of relativity. He pleaded with his ... fundamental description of reality, regarding relativity as a large-scale ...

  10. Physics for Kids: Theory of Relativity

    www.ducksters.com › theory_of_relativity

    The theory of relativity is a very complex and difficult subject to understand. We will just discuss the very basics of the theory here. The theory of relativity is actually two theories that Albert Einstein came up with in the early 1900s. One is called "special" relativity and the other is called "general" relativity.

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