A logarithm is an exponent. The logarithm (to the base 10) of 100 is 2 because 102 = 100. This can be abbreviated log10100 = 2. Because logarithms are exponents, they have an intimate connection with exponential functions and with the laws of...

The logarithm of a positive real number x to the base-a is the number y that satisfies the equation ay = x. In symbols, the logarithm of x to the base-a is loga x, and, if ay = x, then y = loga x. Essentially, the logarithm to base-a is a function: To...

The invention of logarithms plays an important role in the history of mathematics. However, their use was also significant in the fields of science and astronomy, as well as in the development of the digital computer. The scientific explorations in the...

In mathematics, a logarithm of a given number to a given base is the power to which you need to raise the base in order to get the number. For example, the logarithm of 1000 to the common base 10 is 3, because 10 raised to a power of 3 is 1000. More...

RF Detector Logarithmic Video Amplifier Basic of Detector Logarithmic Video Amplifiers (DLVA) Figure 1 illustrates the basic detector logarithmic video amplifier. [1,2] The IF/RF signal is detected by the active tunnel diode detector [3,4] and linearly amplified by [A.sub.V]. The...

by Graham Prophet From a university spin-off company in the North of England comes a microprocessor that is claimed to be the first to operate directly on numbers that it holds in a logarithmic representation. The device is aimed at applications that...

Joe DeZenzo and his 20-person staff at the Give the Gift of Sight Foundation, a philanthropic arm of eyewear manufacturer and distributor Luxottica Group, are busy folks. DeZenzo spent the better part of May in two Romanian cities on a mission with a single aim:...