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Eng ID | Term | Definition |
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3061 | magnetometer: cesium | An OPTICAL PUMPING MAGNETOMETER which employs a cesium absorption cell. |
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3062 | magnetometer: flux-gate | An instrument which uses a wire wound saturable core inductor to measure the EARTH'S MAGNETIC FIELD. |
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3063 | magnetometer: helium | An OPTICAL PUMPING MAGNETOMETER which employs a helium absorption cell. |
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3064 | magnetometer: nuclear precession | A MAGNETOMETER that utilizes the precessional characteristics of hydrogen nuclei when in an ambient MAGNETIC FIELD. Also known as proton pr... more |
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3065 | magnetometer: optical pumping | A highly sensitive MAGNETOMETER which employs a metastable helium or alkali metal absorption cell whose ATOMS absorb maximum energy from an... more |
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3066 | magnetometer: proton precession | See MAGNETOMETER: NUCLEAR PRECESSION. |
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3067 | magnetometer: quartz horizontal | A MAGNETOMETER in which the torque exerted on a suspended MAGNET by the EARTH's horizontal MAGNETIC FIELD is balanced against the torque e... more |
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3068 | magnetometer: rubidium vapour | An OPTICAL PUMPING MAGNETOMETER which employs a rubidium vapour absorption cell. |
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3069 | magnetometer: transit | An instrument used primarily for observing the declination of the EARTH'S MAGNETIC FIELD. |
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3070 | magnetometer: unifilar | A MAGNETOMETER, designed for use on SHORE, employed to measure the horizontal intensity of the EARTH's MAGNETISM; it can also be used to det... more |
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3071 | magnetometer: vector airborne | A FLUX-GATE MAGNETOMETER which measures the intensity and direction of the EARTH'S MAGNETIC FIELD from an aircraft. |
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3072 | magnetometer survey | See SURVEY. |
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3073 | magnetometric zero balance | A MAGNETIC OBSERVATORY instrument used for accurate measurement of the vertical component of the EARTH'S MAGNETIC FIELD. |
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3074 | magnetostriction | The PHENOMENON wherein ferromagnetic material experience an elastic strain when subjected to an external MAGNETIC FIELD. Also, the converse... more |
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3075 | magnetostriction transducer | See TRANSDUCER. |
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3076 | magnetron | An electron tube for converting direct-current energy into radio-frequency energy by means of a MAGNETIC FIELD. |
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3077 | magnification | The apparent enlargement of anything. In optics, the term relates to the properties of LENSES and LENS SYSTEMS to produce an IMAGE which dif... more |
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3078 | magnifying glass | A LENS or combination of LENSES that increases the apparent size of an object seen through it. |
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3079 | magnifying power | The ratio of the apparent length of a linear dimension as seen through an optical instrument to that seen by the unaided eye. Sometimes sho... more |
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3080 | magnitude | The importance, quality or size of something. In ASTRONOMY, relative brightness of a CELESTIAL BODY. According to the accepted classificat... more |