Скачать или смотреть Modulated LED - Listen to a beam of light

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🎧 Can you hear light? In this physics experiment, we explore how audio signals can be transmitted using visible light! Using a modulated LED and a solar cell, this demonstration shows how sound from a radio can travel on a beam of light and be picked up by a speaker. When the light beam is blocked, the sound disappears — making this a powerful and engaging way to understand wave modulation and energy transfer.

🧪 In this experiment, you’ll learn:

What a modulated LED is and how it works
How light can carry audio signals via modulation
How a solar cell converts light signals into electrical signals
The basic components: radio, solar cell, amplified speaker, LED, 9V battery, clips and wires

📚 Key concepts covered:

Electromagnetic radiation
Modulation and signal transmission
Energy conversion
Light as a carrier of information

This project is ideal for middle and high school students, physics beginners, and anyone interested in science demonstrations and STEM learning. It’s a great classroom experiment or weekend activity that makes physics exciting and easy to grasp!

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