# Measurements and Mathematics Terms

#### (mathematics is the deductive study of quantities, magnitudes, and shapes as determined by the use of numbers and symbols while every branch of science and engineering depends on mathematics; measurement is the process of associating numbers with physical quantities and phenomena and measurement is fundamental to the sciences; to engineering, construction, and other technical fields; and to almost all everyday activities)

One cord equals 128 cubic feet (3.456 cubic meters), or a stack eight feet (2.4 meters) long, four feet (1.2 meters) wide, and four feet high.

One coulomb is the quantity of electricity conveyed by a current of one ampere in one second.

2. A unit of capacity, being that of a cube each side of which measures one centimeter; equal to one milliliter.

It is approximately 50.5 centimeters/20.6 inches long, which is about the length of the human forearm measured from the tip of the middle finger to the elbow.

Named after Marie Curie, it is equal to the radioactivity emitted by a gram of radium, or 37 billion disintegrations per second. The Three Mile Island nuclear accident released about 50 curies.

2. A former unit of radioactivity, equal to 3.7 x 10^{10}becquerels (radioactive disintegrations).

One gram of radium has a radioactivity of about one curie.

The numbers to the right of the decimal point represent a fractional part of a whole number.

Degrees are indicated by the ° symbol, so 50° means 50 degrees.

*centigrade*.

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