Light Is Waves: Crash Course Physics #39
The way light behaves can seem very counter intuitive, and many physicists would agree with that, but once you figure out light waves it all starts to make more ...
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Here's a question for you: If you shine a light on a coin that’s hanging in mid-air, what do you think its shadow will look like? Do you think its shadow would have a bright spot of light right in the middle of it? Because it would! It might seem counterintuitive, and 19th-century physicists thought so too, when they tried this experiment. But that little spot in the middle of the coin's shadow helps prove one of the most important discoveries ever made in physics: Light is a wave. [Theme Music] In the 17th and 18th centuries, most physicists thought that light was a particle, because it often behaved like one. But over the years, some scientists began to think that it might actually be a wave. They did experiments to test this idea, and slowly, evidence started to build. W...
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Here's a question for you: If you shine a light on a coin that’s hanging in mid-air, what do you think its shadow will look like? Do you think its shadow would have a bright spot of light right in the middle of it? Because it would! It might seem counterintuitive, and 19th-century physicists thought so too, when they tried this experiment. But that little spot in the middle of the coin's shadow helps prove one of the most important discoveries ever made in physics: Light is a wave. [Theme Music] In the 17th and 18th centuries, most physicists thought that light was a particle, because it often behaved like one. But over the years, some scientists began to think that it might actually be a wave. They did experiments to test this idea, and slowly, evidence started to build. W...
