Schlüsslewort: ‘Schwerkraft’

How fast is a rain drop falling?

Saturday, 5.09.2009

How fast is a rain drop falling?

How fast is a rain drop falling?


The foto was exposed with 1/500s. The hight of the foto is about 20cm. This means that the velocity is about 25m/s. The rule: velocity in m/s is 6 times the diameter in mm seems to fit.

Free fall illuminated with neon light

Sunday, 30.08.2009

Falling of a piece of chalking

Freier Fall


The foto was taken with 1/3s exposure. As the neon light flickers at a frequency of 100Hz on sees the falling white object with interruptions.