PRIME a. 3 definitions
ductor. (Elec.) See under Conductor. -- Prime factor (Arith.), a factor which is a prime number. -- Prime figure (Geom.), a figure which can not be divided into any other figure more simple than itself, as a triangle, a pyramid, etc. -- Prime meridian (Astron.), the meridian from which longitude is reckoned, as the…
PROBABLE a.
ge is, or my be, well founded. -- Probable error (of an observation, or of the mean of a number), that within which, taken positively and negatively, there is an even chance that the real error shall lie. Thus, if 3" is the probable error in a given case, the chances that the real error is greater than 3" are equal to…
PROPORTIONAL a. 2 definitions
al scale, a scale on which are marked parts proportional to the logarithms of the natural numbers; a logarithmic scale. -- Proportional scales, compasses, dividers, etc. (Draughting), instruments used in making copies of drawings, or drawings of objects, on an enlarged or reduced scale.