135 prompts matching "What makes laser light different from ordinary light"
Let me explain: The field pattern around a straight wire and around a coil
I have just studied the field pattern around a straight wire and around a coil in my SS2 P
Practice set: The electric bell and how it operates
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Physics at work: The loudspeaker, and how it turns current into sound
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Quiz: Resistance and Ohm's law reviewed
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Let me explain: Series and parallel circuits reviewed
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Practice set: Electromagnetic induction reviewed
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Quiz: Fleming's left-hand rule
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Let me explain: The factors that determine the size of the force
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Practice set: The force between two parallel current-carrying conductors
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Quiz: The structure of a transformer and its two coils
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Let me explain: Step-up and step-down transformers
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Practice set: The efficiency of a transformer
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Physics at work: Why electricity is transmitted at high voltage
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Let me explain: Atomic number, mass number and isotopes
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Practice set: The Bohr model and electron energy levels
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Quiz: Telling alpha, beta and gamma radiation apart
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Let me explain: The penetrating and ionising power of each radiation
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Practice set: The Geiger-Muller tube and how it detects radiation
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Let me explain: The random nature of radioactive decay
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Practice set: The decay constant and the activity of a source
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