from The Century Dictionary and Cyclopedia
- n. Same as radiometer, 2.
Sorry, no etymologies found.
When Sir William Crookes developed a four-vaned radiometer, also known as the light-mill, in 1873, it was believed that this device confirmed the existence of linear momentum carried by photons
The team's first attempt to simply miniaturize the light-mill didn't work.
Because there's obviously no sunlight in the body, this light-mill pulls its power from a laser run up through the center of the catheter.