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Define Barrier layer cells (photocells)
They are the very simple of the detectors. It contains the bottom support layer of conductive metal like iron. A photosensitive layer of the selenium /cadmium (the positive electrode) rest on the top of the metal support. This light sensitive materials is covered along with a transparent thin layer of gold (the negative electrode). Light passing by the transparent layer to the selenium, causes the release of electrons from selenium. These emitted electrons move to the clear conductive layer and make a weak electric current as they complete a circuit by flowing to the metal support. So the current produced is a direction function of the light intensity striking the photocell.
Nudation - Processes in Succession The first step or requirement is the availability of the right kind of habitat, primary succession takes place in a bare area, that is, with
What is a trace element and how are they important in organisms, give an example.
Atrial Arrhythmias : Atlial fibrillation is the most common rhythm abnormality after CABG. Paroxysmal atrial tachycardia and atrial flutter are less common. Increased sympat
discovery of two light phase in photosynthesis
how can i read role od fungi as saprophyte?
How is the structure of a mitochondrion well adapted for the activities it carries out? The mitochondrial membranes segregate the enzymes and reactants of the Krebs cycle, faci
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What in Genetics is hybridization? The Hybridization in Genetics is the crossing of individuals from "pure" and different lineages in relation to a given trait that is the cros
Q. Is there respiratory pigment in the annelid blood? The blood in beings of the phylum Annelida contains the respiratory pigment hemoglobin the same found in chordates and oth
HE P ARIN It is highly sulphated mucopolysaccharide made of alternate units of glucosamine and glucuronic acid. Heparin is mainly produced by liver and mast cells. I
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