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Method for Measuring the Refractive Index of Liquids

A liquid refractive index and measurement method technology, applied in the field of refractive index measurement, to achieve the effects of reduced usage, low measurement cost, and simple measurement method

Active Publication Date: 2021-09-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, some materials may also be corrosive to a certain extent, and may not be suitable for Abbe refractometers to measure

Method used

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  • Method for Measuring the Refractive Index of Liquids
  • Method for Measuring the Refractive Index of Liquids
  • Method for Measuring the Refractive Index of Liquids

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Embodiment Construction

[0009] The method of measuring the refractive index of a liquid. There is a horizontal bubble on the bottom surface of a container. Adjust the adjustment feet of the support frame to make the inner bottom surface of the container level. Adjusting the level is an existing technology, which is common in engineering and laboratories: generally use a level The bubble is used as an indication facility, and the three adjustment feet of the support frame are used for adjustment, because three points determine a plane, and the adjustment of the three adjustment feet can always be adjusted to the level, and the three adjustment feet can be simplified as one of them is fixed, and the other two are adjusted. Adjust the feet.

[0010] There is a reflective film on the inner bottom surface of the container. The container has a transparent glass scale or a transparent plastic ruler fixed inside the container. The height of the lower surface of the scale from the inner bottom surface is H, an...

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Abstract

The method for measuring the refractive index of a liquid relates to the measurement of the refractive index, especially the measurement of the refractive index of a liquid. There is a reflective film on the inner bottom of the container, and the container has a transparent scale fixed inside the container. The height of the lower surface of the scale from the inner bottom is H, and the scale is parallel to the bottom. The thickness of the scale can be ignored; the light passes through the left side of the scale from above. The oblique incidence of the small hole on the side shines on the reflective film, and after reflection, it shines on the scale. The distance between the small hole on the left side of the scale and the reflection spot is S1; pour liquid into the container, and the liquid just submerges the scale or touches the scale The distance between the small hole on the left side of the scale and the refraction spot is S2; then the refractive index n{0.5S1 / [(0.5S1) 2 +H 2 ] 0.5} / {0.5S2 / [(0.5S2) 2 +H 2 ] 0.5}. The measurement method is simple; the measurement cost is low.

Description

technical field [0001] The present invention relates to the measurement of the refractive index, in particular the measurement of the refractive index of liquids. Background technique [0002] Abbe refractometers are often used to measure the refractive index of liquids; Abbe refractometers have complex structures and high costs. The refractive index changes with the material, temperature, and light wavelength, and it is not a fixed value. At the same time, some materials may also be corrosive to a certain extent, and may not be suitable for Abbe refractometers to measure. Contents of the invention [0003] The invention proposes a new method for measuring the refractive index of liquid. [0004] The technical solution adopted by the present invention to realize the object of the invention is: the measuring method of liquid refractive index, the inner bottom surface of a container is horizontal, it is characterized in that: the inner bottom surface of the container has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/41
CPCG01N21/41
Inventor 李娟胡再国
Owner SICHUAN UNIV