Half an un
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A rule for evaluating certain limits. If f a=0 and ga~0, and if n is the lowest integer for which f,a and g
Used in standardizing diptheria toxin and antitoxin. Describes the quantity of toxin which, when mixed with one standard unit of antitoxin, respectively either kills a guinea pig under standardized conditions, or when injected subcutaneously produces no observable reaction, or when inoculated into the skin produces a minimal lesion.
A radar and microwave frequency band, generally accepted as being 1-2 GHz; not frequently referred to because of lack of international conformity in its use.
Property of a component inductor in a circuit whereby back emf arises because of rate of change of current. It is 1 henry when 1 volt is generated by rate of change of 1 ampere per second. Often abbreviated to inductance.
Absorption of an electron from the L-shell into the nucleus of an atom, giving rise to X-rays of characteristic wavelength depending on atomic number of the element. See K
A radar display in which the target appears as two horizontal pulses, left and right from a central vertical time base, varying in amplitude according to accuracy of aim.
Morphological variants developed from large bodies by prolonged exposure to various treatments. Consist of colonies of filterable bodies with a cytoplasmic matrix. Frequently revert to the normal form. If blood or serum is supplied in their nutrient medium, may breed true for some generations.
A petrol-engine cylinder head carrying the inlet and exhaust valves in a pocket at one side; resembles an inverted L.