Shubham Rathore

13 Questions 33 Answers 0 Followers

Questions related from Shubham Rathore

What is the working principle of milk analyzer Laktan 900?

Hello Everyone Laktan 900 seems to be a very promising device for quick milk analysis in field. Its portable and cost effective. https://www.youtube.com/watch?v=392WRZ90fBI Can anyone explain...

11 May 2018 3,444 6 View

Is Near Infrared Spectroscopy calibration transferable from device to device?

I am working on a low cost NIR spectroscopy (600-1000nm) based milk analyzer. I have read that NIR spectroscopy calibration is not transferable from one device to another. In other words, you...

22 May 2017 7,669 2 View

Is there any colorimetric way to determine fat in Milk?

Hello everyone! I am working on the development of low cost milk analyzer for small dairy farmers. I have tried to dig out 100s of literature so far but still wonder if there are any reagents...

11 May 2017 9,390 9 View

How can you learn optical simulation?

I want to design lens for an array of LEDs having certain properties like collimation, light mixing, etc, and simulate diffraction patterns as well. What is the systematic way of learning the...

01 March 2017 1,965 5 View

Why LED arrays not used as light source in spectrophotometers?

Individual LEDs may have narrow spectral bandwidth, but multiple LEDs can be chosen so that their resultant spectra is broad. Why manufacturers do not build spectrophotometers with LED sources,...

14 December 2016 984 10 View

What is the algorithm for auto-optimization of integration time in a spectrometer?

Dear All I have developed a CCD spectrometer. But I can't understand how to add auto-optimization feature for best integration time. I aim is to find a integration time which is neither too high...

14 October 2016 7,572 2 View

Plotting data from CCD interfaced with Arduino?

Hi. I am working on a spectrometer and using Toshiba CCD TCD1304 in the configuration as provided in the link. Hardware is OK, but I don't have an electronics background, and am having trouble in...

01 May 2016 5,366 1 View

Has anyone used flat-field concave diffraction grating?

Are they easy to handle and work with? Any word of advice for the newbie? Any comparison with plane reflection gratings in terms of temperature stability, efficiency and ghosts?

21 April 2016 6,693 4 View

Can we collect and concentrate the light through turbid medium?

Approach: We want to pass (non-parallel) broad-range (400-1100nm) light through milk and collect ALL of it and concentrate it onto a slit of dimension 50umx1mm. Question: Is it possible? Can we do...

12 April 2016 8,122 11 View

Can diffraction grating be made by DVD-ROM manufacturing unit?

Can circular grooves of CD/DVD be replaced by straight grooves as shown in the picture, by standard CD/DVD ROM manufacturing machines with some non-permanent tweaks? Can the grooves spacing be...

07 April 2016 4,068 14 View

Why are hologram stickers rainbowish?

Why the hologram stickers or gift wrappings show rainbow effect? Do they have grooves? If yes, why can't holograms be shot without the grooves? Is there any way to use this technology/product as...

07 April 2016 433 8 View

How to use optical fibers for taking diffused reflectance measurements?

We are trying to take Near infrared (600-1100nm) spectrum of milk. We failed to transmit any light through even a thin layer (0.5mm) of milk. Hence, we are considering to design transflectance...

05 April 2016 5,912 3 View

How to reduce the turbidity of milk?

We are working on a device to measure fat in milk through NIR Spectroscopy. But no light (12W tungsten lamp) could pass even through 0.5mm milk. Is there any way to reduce the turbidity of the...

05 April 2016 2,050 8 View