calculating
121Solid angle — The solid angle, Ω , is the angle in three dimensional space that an object subtends at a point. It is a measure of how big that object appears to an observer looking from that point. For instance, a small object nearby could subtend the same… …
122Singular value decomposition — Visualization of the SVD of a 2 dimensional, real shearing matrix M. First, we see the unit disc in blue together with the two canonical unit vectors. We then see the action of M, which distorts the disk to an ellipse. The SVD decomposes M into… …
123IBM 604 — The IBM 604 was a control panel programmable Electronic Calculating Punch introduced in 1948 [ [http://www 03.ibm.com/ibm/history/history/year 1948.html IBM Archive: 1948] ] , and was a machine on which considerable expectations for the future of …
124Algorithmic efficiency — In computer science, efficiency is used to describe properties of an algorithm relating to how much of various types of resources it consumes. Algorithmic efficiency can be thought of as analogous to engineering productivity for a repeating or… …
125Covariance — This article is about the measure of linear relation between random variables. For other uses, see Covariance (disambiguation). In probability theory and statistics, covariance is a measure of how much two variables change together. Variance is a …
126Leonardo Torres y Quevedo — (28 December 1852 ndash; 18 December 1936), usually Leonardo Torres Quevedo in Spanish speaking countries, was a Spanish engineer and mathematician of the late nineteenth and early twentieth centuries. Biography Torres was born on 28 December… …
127Consumer price index — CPI redirects here. For other uses, see CPI (disambiguation). A consumer price index (CPI) measures changes in the price level of consumer goods and services purchased by households. The CPI, in the United States is defined by the Bureau of Labor …
128Thévenin's theorem — In electrical circuit theory, Thévenin s theorem for linear electrical networks states that any combination of voltage sources, current sources and resistors with two terminals is electrically equivalent to a single voltage source V and a single… …
