Claude Chappe with his brother Ignace invented the optical telegraph. The first line opened in 1794 and connected Paris and Lille.
Claude Chappe with his brother Ignace invented the optical telegraph.
The first line opened in 1794 and connected Paris and Lille.
In the late 1800s there was much controversy in horse racing circles
as to whether a trotting horse ever had all four
feet off the ground at any one point in time.
In 1872 Eaweard Muybridge was enlisted by Leland Stanford
to settle a wager regarding the position of a trotting horse's legs.
Using the fastest shutter available, Muybridge was able to provide
only the faintest image. He was more successful five years later
when, employing a battery of cameras with mechanically tripped
shutters, he showed clearly the stages of the horse's movement:
at top speed, a trotting horse had all four hooves off the ground
simultaneously, and in a different configuration from that of a
galloping horse.
Click here to see the result
