213 prompts matching "Cooling drinks with ice and evaporative clay pots"
Exam prep: Snell's law and the refractive index
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Real-life Nigeria: Dispersion of white light and the spectrum it produces
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Let me explain: The simple microscope and its magnification
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Worked example: The compound microscope and how it forms an image
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Let me explain: Infrared, visible light and ultraviolet
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Worked example: X-rays and gamma rays, their uses and their dangers
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Exam prep: Calculating frequency and wavelength from the wave speed
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Real-life Nigeria: Radio and television broadcasting in Nigeria
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Let me explain: The speed of sound in solids, liquids and gases
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Exam prep: The frequency, wavelength and amplitude of a sound wave
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Real-life Nigeria: Resonance and the vibration of air columns
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Let me explain: Vibration in air columns, in open and closed pipes
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Exam prep: Noise and the effect it has on health
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Real-life Nigeria: Ultrasound in medicine and in industry
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Let me explain: Diffusion in gases and in liquids
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Worked example: The arrangement of molecules in solids, liquids and gases
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Exam prep: Surface tension and the effects it produces
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Let me explain: The difference between mass and weight
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Exam prep: Gravitational potential energy and escape velocity
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Real-life Nigeria: Satellites and the orbits they keep
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