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2. Refractometer - Wikipedia

   en.wikipedia.org/wiki/Refractometer

   Gemstone refractometers are available both as classic optical instruments and as electronic measurement devices with a digital display. [3] In marine aquarium keeping, a refractometer is used to measure the salinity and specific gravity of the water. In the automobile industry, a refractometer is used to measure the coolant concentration.

3. Digital handheld refractometer - Wikipedia

   en.wikipedia.org/wiki/Digital_handheld_refractometer

   Digital handheld refractometers are generally more precise than traditional handheld refractometers, but less precise than most benchtop refractometers. They also may require a slightly larger amount of sample to read from since the sample is not spread thinly against the prism.

4. Category:Refractometers - Wikipedia

   en.wikipedia.org/wiki/Category:Refractometers

   Traditional handheld refractometer This page was last edited on 29 March 2013, at 09:33 (UTC). Text is available under the Creative Commons Attribution-ShareAlike ...

5. Autorefractor - Wikipedia

   en.wikipedia.org/wiki/Autorefractor

   In some offices, this process is used to provide the starting point for the ophthalmologist or optometrist in subjective refraction tests. Here, lenses are switched in and out of a phoropter and the patient is asked "which looks better" while looking at a chart.

6. Can alcohol cause cancer? Here's what the science says

   www.aol.com/alcohol-cause-cancer-heres-science...

   A growing body of evidence has shown links between cancer and drinking alcohol. In a warning Friday, U.S. Surgeon General Vivek Murthy said cancer risk increases with the number of drinks, but ...

7. Jennifer Garner says she 'lost a friend' in wildfires and now ...

   www.aol.com/jennifer-garner-says-she-lost...

   Jennifer Garner is opening up about her survivor's guilt.. During an interview in Los Angeles on Friday, the "Last Thing He Told Me" star, who said she's lived in or around the now-destroyed ...

8. Traditional handheld refractometer - Wikipedia

   en.wikipedia.org/wiki/Traditional_handheld...

   A traditional handheld refractometer is an analog instrument for measuring a liquid's refractive index. It works on the critical angle principle by which lenses and prisms project a shadow line onto a small glass reticle inside the instrument, which is then viewed by the user through a magnifying eyepiece.

9. The US is in a steep decline of food enjoyment — which has ...

   www.aol.com/both-healthy-enjoyable-eating...

   The number of adults eating in a way they consider to be healthy has fallen, according to new data. What’s more, research shows they aren’t enjoying the food either.