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Quantum Basics
Let's start with photons and the electronvolt.
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1. The Photon
What exactly is a photon? This video shows how we can use the particle model, with individual corpuscles of energy, to explain certain properties of EM radiation.
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2. The Electronvolt
In everyday life we use the joule to measure energy. When we consider the energy of individual particles or photon it is often more convenient to use a smaller unit, the electronvolt, eV.
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3. Practical - Finding Planck's Constant
How to find the value of little 'h' yourself using some LEDs, a voltmeter and a variable power supply. Planck's constant is the constant of proportionality between the particle-like properties and the frequency of the associated wave.
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