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torsion balance
(Encyclopedia) torsion balance, instrument used to measure small forces. It is based on the principle that a wire or thread resists twisting with a force that is proportional to the stress. The…strength of materials
(Encyclopedia) strength of materials, measurement in engineering of the capacity of metal, wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by…U.S. News: Voters Reject Conservative-Backed Measures
Major U.S. news stories, from Occupy Wall Street to Penn State Related Links 2011 Year in Review 2011 News of the WorldScience…John Keats: Four Seasons fill the measure of the year;
The day is gone, and all its s...I cry your mercy-pity-love!-aye, love!Four Seasons fill the measure of the year; Four Seasons fill the measure of the year; There are four seasons in the…Calculating Measurement of Exterior Angles of Triangles Using Substitution
Students are shown how to substitute measurements of interior angles of a triangle to calculate the degree of an exterior angle.Time Measurement, Time Zones, and the International Date Line
How we structure time The two natural cycles on which time measurements are based are the year and the day. The year is defined as the time required for Earth to complete one revolution around the…Lamont, Johann von
(Encyclopedia) Lamont, Johann vonLamont, Johann vonyōˈhän fən läˈmônt [key], 1805–79, Scottish-German astronomer and magnetician, b. Scotland. In 1817 he went to Ratisbon to study at the seminary. He…potential, electric
(Encyclopedia) potential, electric, work per unit of electric charge expended in moving a charged body from a reference point to any given point in an electric field (see electrostatics). The…optical activity
(Encyclopedia) optical activity, the ability of asymmetric compounds to rotate the orientation of planar polarized light. Such compounds and their mirror images are know as enantiomers, or optical…albedo
(Encyclopedia) albedoalbedoălbēˈdō [key], reflectivity of the surface of a planet, moon, asteroid, or other celestial body that does not shine by its own light. Albedo is measured as the fraction of…Trending
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