physical noise
121North Pacific right whale — North Pacific right whale[1] Si …
122Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …
123Analog-to-digital converter — An analog to digital converter (abbreviated ADC, A/D or A to D) is an electronic integrated circuit, which converts continuous signals to discrete digital numbers. The reverse operation is performed by a digital to analog converter… …
124Human factors — For other uses, see The Human Factor (disambiguation). Research subject in a human fatigue study. Human factors science or human factors technologies is a multidisciplinary field incorporating contributions from psychology, engineering,… …
125Hearing aid — Behind the ear aid In the ear aid …
126astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …
127Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
128Throughput — This article is about the use of Throughput in communication networks. For disk drives, see Throughput (disk drive). For business management, see Throughput (business). In communication networks, such as Ethernet or packet radio, throughput or… …
