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Measuring the Planck constant

In this volume of PHYSICS REVIEW Skillset describes some of the practical activities suggested or required by the A-level awarding bodies, and discusses how they enable you to satisfy the Common Practical Assessment Criteria. Here Alex Weatherall discusses measuring the Planck constant using LEDs

To satisfy the Common Practical Assessment Criteria (CPAC) for A-level physics, you need to demonstrate competence in the following areas: following written procedures; applying investigative approaches and methods; safely using equipment and materials; making and recording observations; and researching, planning and reporting (including data analysis).

The awarding bodies for A-level physics require or suggest a number of practical activities that will allow you to satisfy the CPACs. Among other requirements, these expect you to be able to use appropriate software to process data. Finding a value for the Planck constant gives an excellent opportunity to practise these skills.

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The race to the Moon

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Donna Strickland: 1959–

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