gravimeter An instrument for measuring the gravitational acceleration. Most field instruments are relative instruments, i.e. they determine the difference in gravitational acceleration between two or more points. Most operate by determining the change in extension of a spring loaded with a constant mass. Laboratory instruments can be absolute and are based on dropping masses, vibrating strings, or oscillating pendulum systems.
More From encyclopedia.com
INSTRUMENT , in·stru·ment / ˈinstrəmənt/ • n. 1. a tool or implement, esp. one for delicate or scientific work: a surgical instrument writing instruments. ∎ a thi… Stringed Instrument , stringed instrument Musical instrument sounded by the vibration of strings. Instruments fall into different classes, according to the action used to… Instrumentation , Instrumentation refers to the use or application of instruments or specialized technologies for observation, measurement, control, or production. In… Reed Instrument , reed instrument Musical instrument that produces sound when an air current vibrates a fibre or metal tongue. In a clarinet, a beating reed vibrates a… Antonio Stradivari , Antonio Stradivari Italian violin maker Antonio Stradivari (c. 1644-1737) created instruments that are still considered the finest ever made. The new… Instrumental , Instrumentalism is the name given to the pragmatic philosophy of John dewey. In his book The Quest for Certainty (New York 1929) Dewey defines his sy…
About this article
All Sources -
Updated About encyclopedia.com content Print Topic
You Might Also Like