low-frequency oscillation
71Electric power transmission — Electric transmission redirects here. For vehicle transmissions, see diesel electric transmission. 400 kV high tension transmission lines near Madrid Electric power transmission or high voltage electric transmission is the bulk transfer of… …
72Optics — For the book by Sir Isaac Newton, see Opticks. Optical redirects here. For the musical artist, see Optical (artist). Optics includes study of dispersion of light. Optics is the branch of …
73Microbarom — In acoustics, microbaroms, also known as the voice of the sea ,[1][2] are a class of atmospheric infrasonic waves generated in marine storms[3][4] by a non linear interaction of ocean surface waves with the atmosphere …
74Photoelectric effect — The photoelectric effect is a quantum electronic phenomenon in which electrons are emitted from matter after the absorption of energy from electromagnetic radiation such as x rays or visible light.cite book | title = Physics for Scientists… …
75Receiver (radio) — This article is about a radio receiver, for other uses see Radio (disambiguation). A radio receiver is an electronic circuit that receives its input from an antenna, uses electronic filters to separate a wanted radio signal from all other signals …
76ultrasonics — /ul treuh son iks/, n. (used with a sing. v.) the branch of science that deals with the effects of sound waves above human perception. [1930 35; see ULTRASONIC, ICS] * * * Vibrational or stress waves in elastic media that have a frequency above… …
77Insulin — This article is about the insulin protein. For uses of insulin in treating diabetes, see insulin therapy. Not to be confused with inulin. Insulin Computer generated image of six insulin molecules assembled in a hexamer, highlighting the threefold …
78Glossary of climate change — This article serves as a glossary of climate change terms. It lists terms that are related to anthropogenic climate change.AlphanumericTOC align=center nobreak= seealso= references= top=|0 9* 100,000 year problem a discrepancy between the climate …
79Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …
80Damping factor — The term damping factor can also refer to the damping ratio in any damped oscillatory system or in numerical algorithms. In audio system terminology, the damping factor gives the ratio of the rated impedance of the loudspeaker to the source… …
