Transverse and longitudinal waves, wave speed, frequency, wavelength, interference, polarization, and the physics of light and sound.
7 articles
13 min readAn ambulance races past you. The siren sounds higher-pitched as it approaches and drops noticeably as it passes. A galaxy 500 million light-years away has its light shifted toward the red end o...
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16 min readEvery time you use a mobile phone, get an X-ray, feel the warmth of sunlight, or see the colours of a rainbow, you are interacting with the electromagnetic spectrum. The electromagnetic spectru...
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15 min readIf you have ever heard a thunderclap, felt a bass beat through a wall, or watched a Slinky spring ripple back and forth, you have experienced longitudinal waves. Unlike transverse waves — where...
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15 min readEvery time you look in a mirror, see a rainbow, or watch a straw appear bent in a glass of water, you are witnessing two of the most fundamental behaviours of light: reflection and refraction....
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14 min readIn 1801, Thomas Young performed one of the most elegant experiments in the history of physics. He shone light through two narrow slits onto a screen — and instead of two bright bands, he saw a...
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14 min readEvery wave — a ripple on water, sound in air, a light beam crossing space — obeys one equation: v = fλ. Wave speed equals frequency times wavelength. This single relationship connects three of...
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22 min readWhen you pluck a guitar string, watch ripples cross a pond, or see light travel 93 million miles from the Sun to your eyes, you're witnessing transverse waves in action. A transverse wave is on...
Read article →Newton's laws, kinematics, projectile motion, momentum, gravitation, and the mat…
Energy, heat, work, internal energy, the laws of thermodynamics, and the kinetic…
Electric fields, magnetic fields, circuits, Maxwell's equations, and the unified…
Special relativity, quantum mechanics, wave-particle duality, the uncertainty pr…
Displacement, velocity, acceleration, equations of motion, and the mathematical …
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