The chance of taking a blink-free photo

Nic Svenson, an IG-Nobel Prize winner, does the maths of the probability of a blink being captured by a camera. How many times you’ve taken a group-picture and someone appears with the eyes closed?

Here’s the rule of the thumb for calculating the number of photos you have to take of groups (less than 20):

  • divide the number of people by 3 (if there’s good light)
  • divide the number of people by 2 (if the light is bad)

Who said physicists are not suited for solving daily-problems?

Sources

Featured image by Pexels  – C0 license.

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