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The problem statement, all variables and given/known data A microscope equipped with an oil filled objective lens with a numerical aperture of 1.2 is used to image the patterned features on a semiconductor substrate. Define what is meant by the numerical aperture and explain why the lens is oil filled. Using the Rayleigh Criteria, define the smallest resolvable features when light of wavelength 633 nm is used to illuminate the substrate and the oil filled objective is use The attempt at a solution Numerical Aperture is a numerical value which indicates the range of angles at which a system can accept/emit light I know d = (0.61[Lambda]) / 2nsinu and NA is nsinu. Therefore d = (0.61*633*10^-9)/2.4 Is this correct? and why is the lens oil filled?
What is the best solvent to seperate phosphoric acid from aqueous calcium chloride solution
Issuing Different Types Of Passes By Transit Authority
Estimate the number-average molecular weight that is required to give a tensile strength of195MPa.
For parts (a), (c), (d), (f), and (h) of Problem 10.20, determine the approximate percentages of the microconstituents that form. (a) Rapidly cool to 250(C (480(F), hold for 103 s, then quench to room temperature.
thermometry is the science of temperature measurement.nbsp for a thermometer to work we infer the temperature from the
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
The band gap of indium gallium arsenide varies based on the concentration of gallium in the material. A sample of indium gallium arsenide absorbs light with a wavelength less than 1.37 microns. What is the band gap of the indium gallium arsenide samp..
When heavy oils are cracked in a catalytic or thermal cracking process, lighter hydrocarbon compounds are formed. Most cracking processes on heavy oil feeds form products with carbon numbers ranging from two to greater than twenty.
The physical properties of the fluid are: density 875 kg/m3, viscosity 1.46 mN m-2 s. Also, determine the NPSH, at this flow rate, if the vapor pressure of the fluid at the pump suction is 25 kN/m2.
When dilute nitric acid was added to a solution of one of the following chemicals, a gas was evolved, This gas turned a drop of limewater, Ca(OH)2, cloudy, due to the formation of a white precipitate. The chemical was
Estimate the heat-transfer coefficient for steam condensing on the outside, and on the inside, of a 25 mm o.d., 21 mm i.d. vertical tube 3.66 m long. The steam condensate rate is 0.015 kg/s per tube and condensation takes place at 3 bar
Which of the following would you expect to be elastomers and which thermosetting polymers at room temperature? Justify each choice.
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