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Explain the Principle of Microscopy?
When the light passes from one medium to another, refraction occurs, i.e., the ray is bent at the interface. The direction and the magnitude of bending are determined by the refractive indices of the two media forming the interface. The refractive index is a measure of how greatly a substance slows the velocity of light when light passes from air to glass or vice versa. When the light rays strike the lens, a convex lens will focus these rays at specific point called focal point. The distance between the center of the lens and the focal point is called the focal length. Convex lens act as a magnifier.
It provides a clear magnifying image at a much closer range. Lens strength is related to focal length. A lens with a short focal length has a more magnification power than a lens having a longer focal length. Magnification means enlargement. In compound microscope, it is carried out by two-lens system - objective lens and ocular lens. Objective lens produces the real image of the specimen, which is projected up into focal plane and then magnified by the ocular lens to produce the final image. Though magnification is important, it has limits. Unlimited enlargement by increasing magnifying power of the lenses is not possible because of the limitations of resolving power. Microscope should not only produce the enlarged image but also the clear image. Resolution or resolving power of the lens is its ability to separate two close points as separate entities.
What are The main purpose of changes in life style The main purpose of changes in life style are to: - control blood sugar. - maintain the body weight of the patients.
What is enzyme kinetics The study of the rate at which an enzyme works is called enzyme kinetics.
Examine the benefits and risks bird flu research poses to society. Indicate if you believe there are more benefits or more risks associated with this research, and give a rationale
Q Why after the passage of animals from the aquatic to the terrestrial habitat does the abandonment of the ammoniotelic excretion occur? Ammonia is a highly toxic molecule if n
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Jillian and Michael are in their freshman year at college. The two have been friends since grade school and the two of them enjoy getting together for dinner. Michael typically
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Consider 100 ml of 10% solute and 10 ml of 50& solute. Which has the greatest concentration of solute? What is the concentration of solute? Which has a greater quantity of solute?
Directly observed therapy In treating TB, poor adherence to therapy is the most important cause of treatment failure and is associated with emergence of drug resistance. Medica
What is the main means by which autotrophic beings obtain energy? The major means by which autotrophs obtain energy is photosynthesis (There are also chemosynthetic autotrophs)
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