• Question: Padraic How Many Lasers Could You Fit On Your Thumb

    Asked by (>'.'>)zXRhysXz(<'.'<) to Padraic on 12 Feb 2015.
    • Photo: Padraic Morrissey

      Padraic Morrissey answered on 12 Feb 2015:

      The human thumb is about 30mm long by 20mm wide (mine is anyway!), which gives a total area of 600 mm^2. One of my lasers is about 1mm long and 0.002 mm wide, which means the area of one laser is 0.001 mm^2. So on your thumb you could fit 600 /0.001 …which is…600,000 lasers!

      I think that really gives a sense of how small they are!

      Hope that answers your question and don’t forget to vote! 🙂

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