500 prompts matching "Let me explain: How the time base produces a trace"
Practice set: Radiation, and the surfaces that emit and absorb best
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Spot my mistake: Claiming that radiation needs a medium
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Real-life Nigeria: Keeping a Nigerian home cool without air conditioning
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Worked example: A balancing problem solved using the centre of gravity
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Exam prep: The conditions that make a body stable
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Spot my mistake: Confusing the centre of gravity with the centre of a shape
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Worked example: Calculating the pressure at a given depth
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Practice set: The hydraulic press, and the principle Pascal gave it
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Worked example: Calculating the size of a shadow cast by a point source
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Exam prep: Eclipses of the sun and of the moon
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Spot my mistake: Confusing the umbra with the penumbra
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Spot my mistake: Drawing the reflected ray on the wrong side of the normal
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Worked example: Finding refractive index from a pair of measured angles
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Exam prep: The critical angle and the condition for total internal reflection
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Real-life Nigeria: Optical fibres and the periscope
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Worked example: Applying the lens formula to find the image position
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Spot my mistake: Mixing up the sign convention for a diverging lens
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Real-life Nigeria: Lenses in the eye and in spectacles
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Physics at work: Optometry and lens manufacture
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Practice set: Resistance and the factors it depends on
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