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Units of Time: Measure Elapsed Time
In this video, Marta learns how to calculate elapsed time using the clock as a visual.Brodie, Steve
(Encyclopedia) Brodie, Steve, 1863–1901, Brooklyn bookmaker who gained immediate fame and a measure of immortality by allegedly jumping off the Brooklyn Bridge and surviving the fall, on July 23,…Lebedev, Pyotr Nikolaevich
(Encyclopedia) Lebedev, Pyotr NikolaevichLebedev, Pyotr Nikolaevichpyôˈtə nyĭkəlīˈəvĭch lāˈbyədyəf [key], 1866–1912, Russian physicist. The most noted Russian physicist of his time, he studied at…Ångström, Anders Jöns
(Encyclopedia) Ångström, Anders JönsÅngström, Anders Jönsänˈdərs yöns ōngˈström [key], 1814–74, Swedish physicist. He was educated at the Univ. of Uppsala and in 1839 became a member of its faculty.…Einthoven, Willem
(Encyclopedia) Einthoven, WillemEinthoven, Willemvĭlˈəm īntˈhōvən [key], 1860–1927, Dutch physiologist, b. Java, M.D. Univ. of Utrecht, 1885. He was professor at the Univ. of Leiden from 1886. To…stress test
(Encyclopedia) stress test or exercise electrocardiography, in medicine, a test that evaluates the performance of the heart by subjecting it to controlled amounts of physical stress. Such tests,…hexameter
(Encyclopedia) hexameterhexameterhĕksămˈətər [key] [Gr.,=measure of six], in prosody, a line to be scanned in six feet (see versification). The most celebrated hexameter measure is dactylic, which…evaporimeter
(Encyclopedia) evaporimeterevaporimeterĭvăpˌərĭmˈətər [key], instrument that measures the rate of evaporation of water into the atmosphere, sometimes called an atmometer. Evaporimeters are of two…pyranometer
(Encyclopedia) pyranometerpyranometerpĭrˌənŏmˈətər [key], actinometer used to measure the total radiation incident on a surface.Dingley, Nelson
(Encyclopedia) Dingley, NelsonDingley, Nelsondĭngˈlē [key], 1832–99, U.S. congressman (1881–99), b. Durham, Maine. For many years the editor of the Lewiston (Maine) Journal, he was also a state…Trending
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