unit of physical quantity
111specific — [spə sɪfɪk] adjective 1》 clearly defined or identified. ↘precise and clear: when ordering goods be specific. ↘relating uniquely to a particular subject. 2》 Biology relating to or connected with species or a species. 3》 (of a duty or a… …
112Alessandro Volta — Alessandro Volta † Catholic Encyclopedia ► Alessandro Volta Physicist, b. at Como, 18 Feb., 1745; d. there, 5 March, 1827. As his parents were not in affluent circumstances his education was looked after by ecclesiastical relatives.… …
113density — /ˈdɛnsəti / (say densuhtee) noun (plural densities) 1. the state or quality of being dense; compactness; closely set or crowded condition. 2. stupidity. 3. Physics a. the mass per unit of volume. b. the amount per unit of volume or per unit of… …
114troland — (Td) a unit used in photometry to measure the amount of light reaching the retina of the eye. The retinal illuminance in trolands is equal to the luminance of the light shining on the eye, measured in candelas per square meter (cd/m2),… …
115Luminous energy — In photometry, luminous energy is the perceived energy of light. This is sometimes also called the quantity of light.Luminous energy is not the same as the radiant energy, the corresponding objective physical quantity. This is because the human… …
116History of energy — The word energy derives from Greek ἐνέργεια ( energeia ), which appears for the first time in the work Nicomachean Ethics [ [http://www.perseus.tufts.edu/cgi bin/ptext?doc=Perseus%3aabo%3atlg%2c0086%2c010%3a1098b%3a33 vers=original… …
117Kinetic energy — The kinetic energy of an object is the extra energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its current velocity . Having gained this energy during its acceleration …
118Fiat money — Yuan dynasty banknotes were the earliest fiat money. Fiat money is money that has value only because of government regulation or law. The term derives from the Latin fiat, meaning let it be done , as such money is established by government decree …
119сигнал — cигнал 1. Материальный носитель информации, содержащий в себе информацию, кодированную определенным образом. 2. Любая физическая величина (например, температура, давление воздуха, интенсивность света и т. п.), которая изменяется со временем.… …
120Structure tensor — Structure tensors (or second moment matrices) are matrix representations of partial derivatives. In the field of image processing and computer vision, they are typically used to represent gradients, edges or similar information. Structure tensors …
