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Ever hear Albert Einstein’s voice? He’s him explaining his formula, E=mc² It is probably the most famous formula in the world, but what exactly does it mean? Let's start by defining each letter in the formula: E = Energy M = Mass C = Speed of light (a very... large number) If we were to read the formula, we would say, "Energy equals mass times the speed of light squared." The formula itself is rather simple in that it essentially says that energy and mass are different forms of the same thing; they are interchangeable. So are you saying a beam of light and a banana are different forms of the same thing? Yes, in our head, this may not make sense, but it does in nature. This discovery was groundbreaking at the time because people had previously believed that energy could only be created by kinetic or potential energy. You can increase kinetic energy by accelerating your car. You can increase potential energy by stretching a rubber band. Einstein demonstrated that there was a third form, which is that things have energy because they simply exist. Ok, so why is mass multiplied by the speed of light? Whenever you are converting mass to pure energy, it is by nature moving at the speed of light. Pure energy is an electromagnetic radiation, which travels at 186,000 miles/sec (300,000 km/sec). Ok, cool, but why is the speed of light squared? This again has to do with the nature of energy. If an object is moving twice as fast as another object, it does not have twice as much energy. Rather, it has four times as much energy. Hence, the speed of light is squared, which comes out to a very big number. C^2 is the conversion factor from mass to energy. The bottom line is that even small objects have an immense amount of energy. Through the process of nuclear fusion/fission via nuclear power plants, we can harness some of this energy. In the atomic bomb that destroyed the city of Hiroshima, there was about 700 milligrams (equivalent to the weight of 1/3 of a dime) of uranium which was converted to energy that destroyed everything within a 1-mile (1.6 km) blast radius.show more

Historic Vids

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Amer Al-Qashi 🗿3 years ago

Why does E=mc²

Shekhar📖शेखर3 years ago

I was lucky enough to see Einstein’s blackboard, which he used during his second lecture on 16 May 1931, and its equations connect the age, density and size of the Universe. And, we listened to this exact video at that time!❤️

ٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴ3 years ago

Colourized

Tech.Is.Beautiful3 years ago

An intriguing fact about Albert Einstein is that he had difficulty with speech as a child. He reportedly didn't start speaking fluently until he was around three years old, which initially worried his parents. However, once he started talking, he quickly caught up and began expressing himself with a remarkable vocabulary. This early speech delay didn't hinder his intellectual development, as he went on to become one of the most brilliant and influential physicists in history.

Kalpesh | कल्पेश3 years ago

Interesting fact is Albert Einstein was initially skeptical about the implications of his own equation, E=mc², when it was first proposed. He didn't fully grasp the profound consequences until later. This equation fundamentally changed our understanding of energy, mass, and the interconnected nature of the universe.

Zeerabets3 years ago

Whoa! 🤔I've seen E=mc² thrown around a lot, but diving deep into its meaning? Mind officially bent. The banana comparison really puts things into perspective. And to think of the sheer power in just a fragment of a dime's weight is kinda wild. Einstein, was on another level.

Jowen.eth 🔸3 years ago

I don’t think I’ve ever heard his voice, thanks for posting this!

Kalpesh | कल्पेश3 years ago

Did you know that the famous equation E=mc² was actually published by Albert Einstein in his paper "Does the Inertia of a Body Depend Upon Its Energy Content?" in 1905? This paper was part of his annus mirabilis, or "miracle year," where he made groundbreaking contributions to various areas of physics. The equation itself was just a small part of this paper, which also discussed the theory of special relativity and other important concepts.

Life of n83 years ago

Ever seen a photograph of Einstein in color? Now you have- here is a photo of him, taken in the 40s as he lectured to students at Lincoln University

$nfts.ada3 years ago

From E=mc² to this in only a few decades:

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