The most famous equation in the world, E=mc2, arrived rather quietly. In 1905, Einstein published two articles on the Special Theory of Relativity. Einstein went on to present his findings mathematically: energy (E) equals mass (m) times the speed of light (c) squared (2), or E=mc2.

When you drive your car, E = mc2 is at work. As the engine burns gasoline to produce energy in the form of motion, it does so by converting some of the gasoline’s mass into energy, in accord with Einstein’s formula. When you use your MP3 player, E = mc2 is at work. As you read this text, E = mc2 is at work.

Save This Word! An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself.

Einstein’s theory gets its name because it describes how measurements of space and time differ for observers moving relative to one another. 3. The theory gets its name from the relativity of motion, but the fact that motion is relative had already been known for centuries.

What is general relativity? Essentially, it’s a theory of gravity. The basic idea is that instead of being an invisible force that attracts objects to one another, gravity is a curving or warping of space. The more massive an object, the more it warps the space around it.

The “General Theory of Relativity’ is related to gravity. It describes gravitational force as continuous non-spatial whole of space and time. The difference between the two theories is that the theory of general relativity throws light on the force of gravity with respect to curving four-dimensional space-time.

The theory explains the behavior of objects in space and time, and it can be used to predict everything from the existence of black holes, to light bending due to gravity, to the behavior of the planet Mercury in its orbit. The implications of Einstein’s most famous theory are profound.

Einstein’s second mistake with his equation was in his failure to realize that the primary meaning of E=MC2is that it defines the mass of the photon as the truest measure of mass. If Einstein would have allowed the photon its fair share of the mass, then there would be no case where mass is converted into energy.

1916

General relativity (GR) is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915, with contributions by many others after 1915. According to general relativity, the observed gravitational attraction between masses results from the warping of space and time by those masses.

Yet most researchers think general relativity is wrong. incomplete . After all, the other forces of nature are governed by quantum physics; gravity alone has stubbornly resisted a quantum description. The fix is dark matter, particles invisible to light but endowed with gravity.

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. In many ways, a black hole acts like an ideal black body, as it reflects no light.

Although their gravity is stronger, the stretching force is weaker than it would be with a small black hole and it would not kill you. The bad news is that the event horizon marks the edge of the abyss. Nothing can escape from inside the event horizon, so you could not escape or report on your experience.