Question

Question 12(4 points) A measure of the difference in appearance between two objects is A A technique used in the lab to increase contrast is

Answer 1

Answer :

The object in our environment are made of wide range of materials .

The appearance of objects is influenced by many factors including the geometry of the illumination ,shape and reflection properties of object .

If We see geometry of different two objects ,if they appers same then We tell both are geometrically same .

Ex : if We take the color of objects .objects appear different colors because they absorb some colors (wave lengths)and reflected or transmit other colors ,, if only blue light is shone onto a drs shirt ,the shirt appears black ,because the blue would be absorbed and there would be no drs light to be reflected.

Question 12 :

Polarised light microscopy is a contrast enhancing technique that dramatically improves the quality of an image acquired with birefringent material when compare to other techniques such as brightfield and dark field illumination ,phase of contrast ,differential interference contrast ,fluorescence ,hoffman modulation