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Physics is fun. High-frequency alternating current passing through a coil, which creates the electromagnetic field that heats the metal workpiece placed inside or near it.

Johnny

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1,369,902 次观看 • 10 个月前 •via X (Twitter)

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An induction heater consists of an electromagnet and an electronic oscillator that passes a high-frequency alternating current (AC) through the electromagnet. It can reach temperatures that cause the metal to melt [full video:

An induction heater consists of an electromagnet and an electronic oscillator that passes a high-frequency alternating current (AC) through the electromagnet. It can reach temperatures that cause the metal to melt [full video:

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A sharp 90-degree turn is a brutal request for an Electromagnetic wave. Yet inside a Photonic Crystal, something remarkable can happen. The repeating dielectric structure creates ranges of frequency for which propagation through the bulk crystal is strongly suppressed. Remove a line of that crystal and suddenly the defect becomes an allowed route the EM field.

A sharp 90-degree turn is a brutal request for an Electromagnetic wave. Yet inside a Photonic Crystal, something remarkable can happen. The repeating dielectric structure creates ranges of frequency for which propagation through the bulk crystal is strongly suppressed. Remove a line of that crystal and suddenly the defect becomes an allowed route the EM field.

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Ever wondered how a motor can spin without any wires actually touching the moving part?✍️ ε = -N (ΔΦ / Δt) This is a Three-Phase Induction Motor. By using alternating current, it creates a rotating magnetic field that drags the non-magnetic rotor along via electromagnetic induction. Since the aluminum only moves to oppose the changing field, you get high-efficiency, low-friction rotation used in everything from factory tech to EVs. (📽️Credit; physicsisfun_official/Yt )

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You can use Blender's geometry nodes to solve physics and electromagnetic equations such as Biot-Savart law. You can calculate the magnetic field of a coil anywhere in 3D space and visualise the magnetic fields. Additionally, you can see in real-time how the magnetic field lines change as the coil gets deformed and twisted! #geometrynodes #b3d #blender3d #electronics #Engineering #Science #physics #kicad #circuits

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