Who Created the Diopter?
The May 9 Google Doodle Celebrates the Life of Ferdinand Monoyer, the Famed French Ophthalmologist Who Created the Diopter, a Unit of Measurement for Vision...
The May 9 Google Doodle celebrates the life of Ferdinand Monoyer, the famed French ophthalmologist who created the diopter, a unit of measurement for vision still used today. He also invented the Moyoner chart. May 9, 2017 would mark Monoyer's 181st birthday.
Who invented diopter?
A dioptra is an optical instrument for measuring angles or altitudes [5] invented by the Greek astronomer Hipparchus, 150 BC [4]. Perhaps dioptra can be traced back to the Greek dia opteuo, through seeing [5]. Also in Latin, diopter is called dioptra [6].
When was the Phoropter invented?
The phoropter was invented in the early 1900s. One, called the Ski-optometer, was invented by Nathan Shigon and another, called the Phoro-optometer was developed by Henry DeZeng.
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
