A photocell can be defined as; it is a light-sensitive module. This can be used by connecting to an electrical or electronic circuit in an extensive range of applications like sunset to sunrise lighting that mechanically turns on whenever intensity …
The word antibiotic comes from the Greek anti meaning “against” and bios, meaning “life.” An antibiotic is a chemical, produced either by microbes or synthetically, that is hostile to or prevents the growth of other organisms. Today’s media often address …
Each ion must obey the octet rule for maximum stability. Ions will combine in a way that the overall ionic compound will be neutral. In other words, the charges of the ions must balance out. Potassium Chloride
If there were no atmosphere, then the green home effect would also be absent, which is responsible for retaining the heat. Hence the average temperature would be much lower than it is now. Without atmosphere, there would be no green …
Although we often think of fungi as organisms that cause disease and rot food, they are vitally important to human life on many levels. As we have seen, fungi influence the well-being of human populations on a large scale because …
The mole (abbreviated mol) is the SI measure of the quantity of a “chemical entity,” such as atoms, electrons, or protons. It defines the amount of a substance that contains as many particles as there are atoms in 12 grams …
Television signal is of high frequencies. Hence they are not reflected by the ionosphere. Hence to reflect them, satellite is needed. It is the reason why satellites are used for long distance T.V transmission.
Plants are multicellular eukaryotes with tissue systems made of various cell types that carry out specific functions. Plant tissue systems fall into one of two general types: meristematic tissue, and permanent (or non-meristematic) tissue. Cells of the meristematic tissue are …
burette white tile (used to see a color change in the solution) pipette pH indicator (the type depends on the reactants) Erlenmeyer or conical flask titrant (a standard solution of known concentration; a common example is aqueous sodium carbonate) analyte, …
(a) Long-distance radio broadcasts use short-wave bands. Why? (b) It is necessary to use satellites for long-distance TV transmission. Why? (c) Optical and radio telescopes are built on the ground, but X-ray astronomy is possible only from satellites orbiting the …