A c.g.s. (centimeter-gram-second) unit of mass. Originally defined as the mass of 1 cubic centimeter of water at 4

A recording anemometer.

The unit of acceleration in the centimeter-gram-second system of units, equal to one cm per sec2. Commonly used in gravimetry.

Not a linear function of the relevant variables.

See river basin.

A wind scale adapted by the U.S. Forest Service for use in the forested areas of the northern Rocky Mountains (NRM). It is an adaptation of the Beaufort wind scale. The difference between these two scales lies in the specification of the visual effects of ...

A photometer that measures the received intensity of a distance tight source.

The height of the cloud base above the local terrain.

An instrument designed to measure the effect of sunlight on evaporation from plant foliage. It consists of a porous clay atmometer whose surface has been blackened so that it absorbs radiant energy.

A rainbow of angular radius of about 50

Generally, an instrument designed to measure or estimate the blueness of the sky. See Linke-scale.

The range through which the input may be varied without initiating a response. Usually expressed as a percentage of full-scale range.

The level at which ice crystals and snowflakes melt as they descend through the atmosphere.

An inert gas. A colorless, monatomic element which is found to occur in dry air to the extent of only 0.000524 percent by volume. Helium is very light, having a molecular weight of only 4.003 and specific gravity referred to air of 0.138. Because helium i ...

A sunshine recorder of the type in which the time scale is supplied by the motion of the sun. It consists essentially of a spherical lens which bums an image of the sun upon a specialty prepared card.

A curve showing the variation of temperature with height in the free air. See lapse rate.

The energy of any type of electromagnetic radiation. Also called radiation.

Thermometer used for measuring the highest temperature attained during a given interval of time, for example, a day.

in folklore, a name for fire.

Same as photometer.