Dictionary of Technical Terms for Aerospace UseU.S. Government Printing Office, 1965 - 314 стор. Brief definitions "intended to be as clear as possible to the non-expert, but accuracy has not been compromised for the sake of readability. Mathematics has been used where necessary to avoid ambiguity."--Intro. Published 1965. |
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Загальні терміни та фрази
abbr absorption acceleration aircraft altitude angle angular antenna Astronomical Union abbreviations atmos atmosphere atomic axis called celestial body celestial equator celestial sphere centimeter circle coefficient Compare component constant constellation coordinates Cosmos density device diffuse sky radiation direction distance earth ecliptic electric electromagnetic electromagnetic radiation electron emission energy equator flow fluid force frequency frequency modulation fuel function gage gravity heat horizon index of refraction International Astronomical Union ionization ionosphere lapse rate latitude launch light magnetic field mass mean measured meridian meter modulation molecules moon motion normal nozzle orbit particles phase plan position indicator plane plasma polar pole position pressure propagation propellant pulse quantity radar radiation radio ratio rays reference refraction rotation satellite scattering signal solar sound space spacecraft specific speed sphere surface symbol target temperature term thermal tion tube unit usually vapor vector vehicle velocity vernal equinox vertical wave wavelength
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Сторінка 26 - Antimony Argon Arsenic Astatine Barium Berkelium Beryllium Bismuth Boron Bromine Cadmium Calcium Californium Carbon Cerium Cesium Chlorine Chromium Cobalt Copper Curium Dysprosium Einsteinium Erbium Europium Fermium Fluorine Francium Gadolinium Gallium Germanium Gold Hafnium Helium Holmium Hydrogen Indium Iodine Iridium Iron Krypton Lanthanum Lead Lithium Lutetium Magnesium Manganese...
Сторінка 153 - ... the squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Сторінка 186 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Сторінка 257 - The sound pressure level, in decibels, of a sound is 20 times the logarithm to the base 10 of the ratio of the pressure of this sound to the reference pressure.
Сторінка 201 - The radiant intensity (flux per unit solid angle) emitted in any direction from a unit radiating surface varies as the cosine of the angle between the normal to the surface and the direction of the radiation.
Сторінка 271 - Standard deviation: the square root of the arithmetic mean of the squares of the deviations from the mean; also called root mean square error and sigma deviation.
Сторінка 255 - A photovoltaic cell that converts sunlight into electrical energy. solar constant. The rate at which solar radiation is received outside the earth's atmosphere on a surface normal to the incident radiation and at the earth's mean distance from the sun.
Сторінка 133 - ... heating and cooling a solid metal or alloy in such a way as to obtain desired conditions or properties. Heating for the sole purpose of hot working is excluded from the meaning of this definition.
Сторінка 187 - Any undesired sound. By extension, noise is any unwanted disturbance within a useful frequency band, such as undesired electric waves in a transmission channel or device. When caused by natural electrical discharges in the atmosphere noise may be called "static." 2. An erratic, intermittent, or statistically random oscillation. If ambiguity exists as to the nature of the noise, a phrase such as "acoustic noise" or "electric noise
Сторінка 11 - The ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2 X 10"7 newton per meter of length.