Ref. index of differnet concentrations of glucose

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A user inquires about the relationship between glucose concentration and refractive index, seeking a reference for how the refractive index varies with concentration. It is confirmed that as glucose concentration increases, the refractive index also increases. A link to a relevant study on the optical properties of glucose is provided for further reference. Additionally, the user asks whether to use the speed of light in air or vacuum for calculations involving refractive index, with the consensus being to use the speed of light in a vacuum for accuracy. The discussion concludes with appreciation for the assistance received.
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is there a site with this? i want to see how the ref. index. of a soln of glucose varies with concentration.

can someone tell me if my prediction that as concentration increase, ref. index increases is correct?
 
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Thanks a lot again.

One more question: you know with my value of refractie index i worked out. if i want to measure the speed of light in the medium, i know the equation is refractive index = (speed of light / speed of light in liquid) and I know you can rearrange that.

but for the "speed of light", do i use the speed of light in air? or vacuum? bearing in mind my experiment (lens),
 
blackcat said:
Thanks a lot again.

One more question: you know with my value of refractie index i worked out. if i want to measure the speed of light in the medium, i know the equation is refractive index = (speed of light / speed of light in liquid) and I know you can rearrange that.

but for the "speed of light", do i use the speed of light in air? or vacuum? bearing in mind my experiment (lens),
Use speed of light in a vacuum. Even air has an index of refraction that is slightly different than 1. As a pracitical matter, if you measure the index of refraction relative to "air" it will be the same as relative to vacuum to the level of accuracy you are likely to achieve. Unless you need fantastic precision, you can assume light travels the same speed in air as in a vacuum.
 
Ok, thank you for all the help!
 

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