501 prompts matching "Let me explain: How a wave carries energy without carrying matter"
Practice set: Induced e.m.f. problems for moving conductors
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Physics at work: Power transmission
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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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Physics at work: Electrical machine manufacture
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Worked example: Identifying products at each electrode in a stated cell
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Practice set: Problems on conduction in electrolytes
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Spot my mistake: Confusing electron flow with conventional current
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Real-life Nigeria: Neon signs and fluorescent tubes
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Physics at work: Lighting technology
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Worked example: The critical angle from stated refractive indices
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Spot my mistake: Assuming light bends round the fibre rather than reflecting
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Physics at work: Telecommunications
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Practice set: Problems on laser output and photon count
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Spot my mistake: Treating laser light as simply very bright light
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Real-life Nigeria: Lasers in surgery, printing and barcode scanning
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Physics at work: Laser and photonics work
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Real-life Nigeria: Unit checking before trusting a calculation
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Physics at work: Engineering calculation and quality control
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