- Industry: Earth science
- Number of terms: 93452
- Number of blossaries: 0
- Company Profile:
Founded in 1941, the American Congress on Surveying and Mapping (ACSM) is an international association representing the interests of professionals in surveying, mapping and communicating spatial data relating to the Earth's surface. Today, ACSM's members include more than 7,000 surveyors, ...
The scattering of electromagnetic radiation by particles whose characteristic size is of the same order of magnitude as the wavelength of the radiation.
Industry:Earth science
A magnetometer using a gas (helium or alkali metal) to absorb energy from a beam of infrared radiation. The absorption is a maximum when an FM oscillator is tuned to the resonant frequency of the gas. The resonant frequency is proportional to the intensity of the Earth's magnetic field at the point of measurement.
Industry:Earth science
The luminous flux through 1 steradian from a uniform point of one candela.
Industry:Earth science
The tensor whose elements Mij are the second derivatives, in a rectangular, Cartesian coordinate system rotating with the Earth, of the gravitational potential of the Earth.
Industry:Earth science
A neighborhood created according to a plan and whose characteristics are determined by that plan.
Industry:Earth science
A tidal datum without a precise meaning, adopted in some instances by U.S. courts as defining ordinary (average) high water mark.
Industry:Earth science
The magnetism displayed by the south-seeking end of a freely suspended magnet. This is the magnetism of the Earth's southern magnetic pole.
Industry:Earth science
