• Question: Are photons a unit of light energy, or do they just carry the energy? Also can you explain the idea of quantum's 20 words or less?

    Asked by x_Ellie_x to Euan on 13 Jun 2016. This question was also asked by You.
    • Photo: Euan Allen

      Euan Allen answered on 13 Jun 2016:

      Hi x_Ellie_x,

      I answered your second question today in the chat so I’ll pass that one for now and answer the first one.

      Photons are both of the things you said. They are the smallest amount of energy that you can send using light. Because they carry energy we can actually use them to send messages and information to each other. This is the basis of why I’m trying to build a computer using light (instead of electrons).

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