🌿 Seasonal STEAM

How does a bumblebee lift off?

The wing twists at the top and bottom of every stroke, leaving tiny air vortices — miniature tornadoes that suck the bumblebee upward.

LIFT Vortex 200 beats / second
Bumblebee body
Air vortex = lift
Upward direction
Buzz (sound waves)
~200
wingbeats per second
7 °C
coldest flight weather
1934
when calculations "forbade" flight