• Question: how hevey are electrones

    Asked by to Clara on 13 Mar 2014. This question was also asked by .
    • Photo: Clara Nellist

      Clara Nellist answered on 13 Mar 2014:

      The mass of a single electron is 9.109 × 10^−31 kg. Don’t worry too much about the 10^−31 bit, that just means that the number is actually:
      0.0000000000000000000000000000009109 kg.
      Which is a bit longer to write. As you can see, this is a very, very small number!

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