A refractometer is an instrument used to measure the refractive index of gases, liquids, and translucent solids like gemstones. Liquids are tested for things such as blood proteins, salinity, fluid concentrations, and specific gravity of urine.
Answer:
I don't have one sorry
Explanation:
it's because I can't see the question I don't know it I'm sorry dude
Is there suppose to be a picture? Cause I do t see one
This was because the experiment showed that a substance could emit radiation even while it was not exposed to light.
