spectropolarimeter การใช้

Since 2007, the Bernard Lyot Telescope is housing an echelle spectropolarimeter NARVAL, allowing astronomers to probe stellar magnetic fields to an exquisite sensitivity.
With his increasing knowledge in optical physics, he developed several optical measurement instruments, such as an spectropolarimeter and a hematometer ( a device used for measuring the content of hemoglobin in the blood ), which was named in his honor, and which for many years found wide application in laboratory medicine and diagnostic hematology.