instrument calibration laboratory
71Voltmeter — Demonstration voltmeter from a physics class A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage… …
72Partial discharge — In electrical engineering, a partial discharge (PD) is a localised dielectric breakdown of a small portion of a solid or liquid electrical insulation system under high voltage stress. While a corona discharge is usually revealed by a relatively… …
73Dosimetry — Radiation dosimetry is the measurement and calculation of the absorbed dose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation. It is a scientific subspecialty in the fields of health physics and medical… …
74Verification and Validation — Verification Validation is the process of checking that a product, service, or system meets specifications and that it fulfils its intended purpose. These are critical components of a quality management system such as ISO… …
75Absorption spectroscopy — An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light as a specific example. A white beam source – emitting light of multiple wavelengths – is focused on a sample (the complementary… …
76McLeod gauge — A glass McLeod gauge, drained of mercury A McLeod gauge is a scientific instrument used to measure very low pressures, down to 10 6 Torr. It was invented in 1874 by Herbert McLeod (1841–1923).[1] McLeod gauges were once commonly found attached to …
77Closure phase — The closure phase is an observable quantity in imaging astronomical interferometry, which allowed the use of interferometry with very long baselines. It forms the basis of the self calibration approach to interferometric imaging. The observable… …
78Moderate-Resolution Imaging Spectroradiometer — MODIS redirects here. For the company, see MPS Group. Ash plumes on Kamchatka Peninsula, eastern Russia …
79STS-66 — is a Space Shuttle program mission.Infobox Space mission mission name = STS 66 insignia = Sts 66 patch.png shuttle = Atlantis launch pad = 39 B launch = November 3, 1994, 11:59:43.060 am EDT landing = November 14, 1994, 10:33:45 am EST, Edwards… …
80Prothrombin time — The prothrombin time (PT) and its derived measures of prothrombin ratio (PR) and international normalized ratio (INR) are measures of the extrinsic pathway of coagulation. They are used to determine the clotting tendency of blood, in the measure… …
