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When light inside water hits the surface at a steep enough angle, it stops escaping and reflects completely back into the water. It’s called total internal reflection, and it’s a reminder that even light doesn’t always travel the path we expect.

Bluntly Put Philosopher (BPP)

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54,986 次观看 • 15 天前 •via X (Twitter)

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The law of reflection states that the angle of incidence always equals the angle of reflection: when light hits a surface, it bounces off at the same angle it arrived, measured from an imaginary line perpendicular to the surface (the normal).

The law of reflection states that the angle of incidence always equals the angle of reflection: when light hits a surface, it bounces off at the same angle it arrived, measured from an imaginary line perpendicular to the surface (the normal).

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Every year, in the middle of February, the sunlight falls on this waterfall called «Horsetail,» and because of the specific angle at which the light hits, it looks like the water is on fire. The water starts to glow orange and red.

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“When that light hits the sky, it’s not just a call. It’s a warning… To them.”

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🌎 Very intriguing!! There is a planet larger than earth, made up entirely of water. It’s called TOI-1452b and it’s 100 light years away from earth. It is a true WATER WORLD.

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A laser beam can travel along a falling stream of water, trapped by total internal reflection, the same principle used in fiber optic cables.

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$The patterns of light on the sea floor. They are called caustics: they are created by light refracted and reflected from the air/water interface. Water acts as a dynamic magnifying glass.$

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$The patterns of light on the sea floor. They are called caustics: they are created by light refracted and reflected from the air/water interface. Water acts as a dynamic magnifying glass.$

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Total internal reflection of light

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Total internal reflection of light

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Water — the gentlest, the most elegant, the most benevolent. It surges with the dancers, and glimmers with the light. Funshine Culture’s journey upon water never stops. #WaterPerformance #ChineseCulture #EasternElegance #FunshineCulture

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it’s even worse when when you put it into the context of the masterpiece that the weeknd gave us for the way of water

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$n₁ sin θ₁ = n₂ sin θ₂ Watch this laser hit the glass-air boundary. At first, it bends out (refraction). Then... boom. Angle exceeds the critical θ_c = arcsin(n₂/n₁) ≈ 42° for glass (n≈1.5), and every photon turns back inside. No leakage. Pure total internal reflection. This is why fiber optics carry the internet across oceans without losing signal. Why diamonds sparkle like crazy. Why light can get trapped in a stream of water.$

n₁ sin θ₁ = n₂ sin θ₂ Watch this laser hit the glass-air boundary. At first, it bends out (refraction). Then... boom. Angle exceeds the critical θ_c = arcsin(n₂/n₁) ≈ 42° for glass (n≈1.5), and every photon turns back inside. No leakage. Pure total internal reflection. This is why fiber optics carry the internet across oceans without losing signal. Why diamonds sparkle like crazy. Why light can get trapped in a stream of water.

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The bubble Cymatic toroid, just water soap ring light and the right frequency. Go ahead Google if it’s CGI

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... a video from the surveilance cam about two of the cold water phases ... valves for cold and warm water also as the celldoor lock and internal light are remote controlled by the guard or robots

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Beautiful footage from beneath the waves in the crystal clear water off Oahu, Hawaii, providing a stunning example of patterns of light known as caustics, occurring when light is refracted and reflected from a surface. 📽: Nolan Omura

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