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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.
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 ...
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.
Shin Nippon Nvision K-5001 Refkeratometer The optics inside a Shin Nippon Nvision K-5001 Refkeratometer. The majority of autorefractors calculate the vision correction a patient needs (refraction) by using sensors that detect the reflections from a cone of infrared light.
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.
DETROIT (Reuters) -Stellantis said on Tuesday it will deploy a new vehicle system that will support assembly of gasoline, hybrid and electric models, but in a sign of how turbulent the electric ...
In the Abbe refractometer the liquid sample is sandwiched into a thin layer between an illuminating prism and a refracting prism. The refracting prism is made of a glass with a high refractive index (e.g., 1.75) and the refractometer is designed to be used with samples having a refractive index smaller than that of the refracting prism.
For Hagerty, which now owns its own auction house, classic car shows (including Amelia Island), and even a media company, a dip in the classic car market isn’t impacting business.
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