Why Do Wind Turbines Have Three Blades?

Join us to celebrate our sun (and wind!) powered planet on Sept. 21 - more info at https://www.sunday.earth/ Support MinutePhysics on Patreon! https://patreon.com/minutephysics Wind turbines are a successful and popular method to create clean energy. But why do almost all of them have 3 blades? Here are 3 reasons. Further reading: - The Wind Hand Book, Tony Burton et al., 2001 - The Effect of the Number of Blades on the Efficiency of A Wind Turbine, Kehinde Adeseye Adeyeye et al., 2020 - https://www.youtube.com/watch?v=WGKIjojADmg - https://www.youtube.com/watch?v=CI-bwqhhTTw Link to Patreon Supporters: http://www.minutephysics.com/supporters/ MinutePhysics provides an energetic and entertaining view of old and new problems in physics - all in a minute! Created by Henry Reich Produced by Joshua Chawner