REFRACTOMETER
light moves through
and bounces offwhat is left over
is measuredand revealed
What is one way you can identify an unknown liquid or reflective surface? Use a refractometer!
And of course some research sites to peruse..
Cornell’s explanation on how these devices work
Wellesley’s site with how to use this device
and a youtube video that takes this tool out of the realm of science and into practical application: using a refractometer to check engine coolant
A refractometer measures way light bounces off a substance. It is used by scientists in labs as well as people pursuing practical applications in the field. A lot of the sites I found were for making beer! And several for gemology. I thought it was very interesting — and can’t remember ever using one. Now I want to see how they work “up close” some time.
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