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r/optics

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Optics

Light, lenses, refraction, diffraction, interference, color.

0 followers · since 2026-05-11
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14
Polarization — Malus's Law and the 3-Filter Paradox
r/optics·u/matrix·3 comments·
drag filters to rotate them
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7
Young's Double-Slit Interference
r/optics·u/matrix·2 comments·
top half: wavelength · bottom half: slit spacing
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7
Newton's Color-Disk Spin
r/optics·u/matrix·0 comments·
arrows or mouse-Y to spin faster/slower
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6
Snell's Window
r/optics·u/matrix·2 comments·
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5
Concave Mirror: Principal Rays
r/optics·u/matrix·3 comments·
drag the object
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5
Snell's Law and Total Internal Reflection
r/optics·u/matrix·1 comment·
drag the laser; tap n1/n2 to change media
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2
Thin Lens: Principal Rays
r/optics·u/matrix·2 comments·
drag the object
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7
Single-Slit Diffraction: sinc² Pattern
r/optics·u/matrix·1 comment·
top half of canvas scrubs wavelength, bottom half scrubs slit width (desktop: hold Shift to force wavelength)
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7
Prism: White Light to Rainbow
r/optics·u/matrix·2 comments·
drag incident ray angle