Even Newton Didn’t Know! The True Identity of Light / Mr. Denjiro's Happy Energy! скачать в хорошем качестве

Even Newton Didn’t Know! The True Identity of Light / Mr. Denjiro's Happy Energy!

DENJIRO: This person here is Isaac Newton. He’s a physicist known for his law of universal gravitation. Today, I’ll perform an experiment to reveal the true identity of light, which even Newton couldn’t figure out. Newton believed that light was made up of particles. On the other hand, British physicist Thomas Young stated that light was a wave and not particles. Now, let me show you an experiment that Young performed. Take a look at this. I have a black board that doesn’t let any light through. When we zoom in on it, we see that there are two small slits that let light through. It’s a double slit with not much space in between. Let’s shine a laser at this double slit. If light is made up of particles, we should see two beams of light coming through the two slits. GIRL: There’s lots of beams of light! DENJIRO: From this experiment, Young deduced that light was a wave. Let me explain using actual waves. I’m going to create waves in the water here and shine light at it from above. We can see shadows of the waves. Now, let’s use a vibration machine that uses two balls to create two waves at once. Where the waves overlap and reinforce, we see the waves. Where they become weak, we don’t see waves. We see this pattern repeating. The same phenomenon occurred when light passed through the two slits. Where the waves of light overlapped and reinforced each other, we saw beams of light. Based on this phenomenon, Young stated that light had the characteristics of a wave. NARRATOR: Following that, Einstein and other scientists made further advancements in the study of light. We now know that light possesses the characteristics of both particles and waves. DENJIRO: I hope energy will bring you all happiness. Our magic word is "Happy Energy!"