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121Faraday cup — Infobox Laboratory equipment name = Faraday cup caption = Schematic of a Faraday cup acronym = other names = uses = Charged particle detector inventor = manufacturer = model = related = Electron multiplier Microchannel plate detector Daly… …
122Foraminotomy — is a medical operation used to relieve pressure on nerves that are being compressed by the intervertebral foramina, the passages through the bones of the vertebrae of the spine that pass nerve bundles to the body from the spinal cord.A… …
123Finite-difference time-domain method — Finite difference time domain (FDTD) is a popular computational electrodynamics modeling technique. It is considered easy to understand and easy to implement in software. Since it is a time domain method, solutions can cover a wide frequency… …
124Troland — The troland (symbol Td), named after L.T. Troland, is a unit of conventional retinal illuminance . It is meant as a method for correcting photometric measurements of luminance values impinging on the human eye by scaling them by the effective… …
125Propeller walk — is the term for a propeller s tendency to rotate a boat as well as accelerating it forwards or backwards.A right handed propeller (which rotates clockwise [as viewed from the stern] when in forward gear) will tend to push the aft of the boat to… …
126Humanitas — The word humanitas was created by Cicero to describe a good human. In Cicero s opinion it was a necessity for the education in the Classical studies. Pliny the Younger defined it as the capacity to win the affections of lesser folk without… …
127Nuclear cross section — The nuclear cross section of a nucleus is used to characterize the probability that a nuclear reaction will occur. The concept of a nuclear cross section can be quantified physically in terms of characteristic area where a larger area means a… …
128Continental collision — For general context, see Plate tectonics. Cartoon of a tectonic collision between two continents Continental collision is a phenomenon of the plate tectonics of Earth that occurs at convergent boundaries. Continental collision is a variation on… …
