pendulum measurements
81Force — For other uses, see Force (disambiguation). See also: Forcing (disambiguation) Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate …
82Quantum mechanics — For a generally accessible and less technical introduction to the topic, see Introduction to quantum mechanics. Quantum mechanics …
83François Arago — 25th Prime Minister of France In office 9 May 1848 – 24 June 1848 Preceded by Jacques Charles Dup …
84Conservation of energy — This article is about the law of conservation of GPE in physics. For sustainable energy resources, see Energy conservation. Prof. Walter Lewin demonstrates the conservation of mechanical energy, touching a wrecking ball with his jaw. (MIT Course… …
85J. Lamar Worzel — (born 1919), American geophysicist, is a graduate of Lehigh University where he met Dr. Maurice Ewing with whom he had a forty year working relationship.Worzel had a long and notable career as a research scientist and professor of oceanography at …
86Thomas Corwin Mendenhall — Infobox Scientist name = PAGENAME box width = image size =150px caption = PAGENAME birth date = October 4, 1841 birth place = Hanoverton, Ohio death date = March 23, 1924 death place = Ravenna, Ohio residence = citizenship = nationality = US… …
87Nondimensionalization — is the partial or full removal of units from an equation involving physical quantities by a suitable substitution of variables. This technique can simplify and parameterize problems where measured units are involved. It is closely related to… …
88Diamond-like carbon — A ta C thin film on silicon (15 mm diameter) exhibiting regions of 40 nm and 80 nm thickness …
89Hardness — This article is about mechanical properties of materials. For other uses, see Hard. Hardness is the measure of how resistant solid matter is to various kinds of permanent shape change when a force is applied. Macroscopic hardness is generally… …
90Edward Pigot — Edward Francis Pigot (18 September 1858 – 22 May 1929) was an Irish born Australian Jesuit priest, seismologist and astronomer. He was president of the New South Wales branch of the British Astronomical Association in 1923 24 and a council member …
