501 prompts matching "Exam prep: Snell's law and the refractive index"
Worked example: Choosing a core material from hysteresis data
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Practice set: Problems on magnetisation and demagnetisation
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Real-life Nigeria: Magnets in loudspeakers and electric generators
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Exam timing: A timed magnetic materials set
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Worked example: Identifying products at each electrode in a stated cell
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Real-life Nigeria: Neon signs and fluorescent tubes
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Exam timing: A timed conduction problem set
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Quiz: Total internal reflection as the basis of the fibre
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Practice set: Problems on signal loss and fibre geometry
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Spot my mistake: Assuming light bends round the fibre rather than reflecting
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Exam timing: A timed fibre optics problem set
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Quiz: Stimulated emission and population inversion
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Let me explain: Coherence, monochromaticity and collimation
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Worked example: Photon energy of a laser of stated wavelength
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Practice set: Problems on laser output and photon count
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Real-life Nigeria: Lasers in surgery, printing and barcode scanning
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Exam timing: A timed laser problem set
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Physics at work: Laser and photonics work
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Quiz: Deriving the dimensions of a compound quantity
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Exam timing: A timed dimensional analysis set
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