halometer
An instrument for measuring the forms and angles of salts and crystals.
Noun
- An instrument for measuring the forms and angles of salts and crystals.
- An instrument for determining the size of blood cells by measuring the angular diameter of diffraction of light passing through the blood.
- When a small source of light is viewed through a thin blood film on a glass slide, a circular coloured pattern, or halo, is seen. The angular diameter of this halo is inversely proportional to the diameter of the blood...
Origin
From halo- + -meter.