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Questions related from Iftak Hussain
We can determine concentration from absorbance at a particular wavelength as: Absorbance= (absorption co-efficient)x (concentration)x (path length)= - log [Isample/Iblank]. If we measure two...
11 January 2018 1,931 3 View
According to EPA US in scattering based turbidity monitoring instruments such as nephelometers, the detection angle should be considered to be 90 degree. What it the advantage of using this...
29 March 2017 7,538 4 View
I need a chemical method with less chemical use for determination of Arsenic in drinking water. The work is focused on developing low cost and field portable sensor for detection of Arsenic in...
14 July 2016 780 7 View
I have prepared salt solutions with salinity value in the range 0 to 1 ppt with step incremental value of 0.1 ppt by dissolving NaCl salt to distilled water . I have prepared the calibration...
24 March 2016 9,894 9 View
I want to unclad an optical grade plastic optical fiber therefore I just want to know which is the best method for unclad this type of fiber. The specification sheet is attached herewith.
10 February 2016 9,680 10 View
Figure shows the UV-VIS spectroscopic result of NaCl solution prepared in distilled water. The solution is transparent and it absorbs in the whole visible region with increase in its concentration...
04 January 2016 4,574 8 View
To measure water turbidity we have to compare nephelometric 900 scattered intensity with that of Formazine standard solution but we don't know about the particle distribution suspended in water,...
28 October 2015 2,266 4 View
I have an interferogram and I want to remove the speckle noise in it. Though median filter is a classic technique, I don't have any other algorithms so if I use the median filter for this does it...
16 October 2015 5,149 3 View
Mostly intensity is measured using photo diodes or photo resistors in the units of volts/ampere but I want to measure absorption of light intensity from a green led when it passes through my test...
13 October 2015 7,900 6 View
As per the guidelines of US environmental protection agency (EPA Method 180.1) why the distance between source and detector should be within 10 cm for nephelometric turbidity measurement at 900...
19 August 2015 5,958 2 View
Is there any equation relating turbidity of water(the suspended particles are of random size but considered to be spherical) with the nephelometric 900 scattered intensity?
10 August 2015 1,579 4 View
I am working on digital in-line holography and I am confused with how to numerically reconstruct the object image with the captured hologram...If there is some pre-existing construction software...
27 March 2015 9,142 3 View
when point source is placed near the surface of a glass plate of width 1.15 mm, I have got the fringes as shown in the figure attached. Rotating the glass slide to an angle of 10 through an axis...
09 March 2015 7,990 11 View
Image reconstruction from hologram
28 February 2015 3,482 8 View
