Uploaded September 2025 | Updated September 2026, 2 weeks ago

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How can light, the fastest thing in the universe, actually lose a race?

We see light's incredible advantage every day—from the flash of lightning that arrives long before the thunder, to the sight of fireworks that precedes the boom. Traveling nearly a million times faster than sound, light's victory seems certain.

But this video reveals the surprising scenario where the tortoise beats the hare. We explore the fundamental differences between light (an electromagnetic wave) and sound (a longitudinal wave) to uncover why one is a master of the straight sprint, while the other is an expert at navigating obstacles.

Through a custom-coded Python simulation, you'll see Huygens' Principle in action and discover how diffraction is sound's secret weapon, allowing it to bend around corners while light gets stopped in its tracks. This is the physics of why you can hear someone around a corner long before you can see them!

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#breakthroughjuniorchallenge #physics #light #sound
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