ion-sound wave
71Список торговых марок Sony — Следующие торговые или зарегистрированные торговые марки, технологии и слоганы принадлежат компании Sony Corporation, Япония …
72Blood pressure — For information about high blood pressure, see Hypertension. Blood pressure Diagnostics A sphygmomanometer, a device used for measuring arterial pressure. MeSH …
73chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
74refraction — refractional, adj. /ri frak sheuhn/, n. 1. Physics. the change of direction of a ray of light, sound, heat, or the like, in passing obliquely from one medium into another in which its wave velocity is different. 2. Ophthalm. a. the ability of the …
75Auditory system — The auditory system is the sensory system for the sense of hearing. Ear Outer ear The folds of cartilage surrounding the ear canal are called the pinna. Sound waves are reflected and attenuated when they hit the pinna, and these changes provide… …
76Plug-in hybrid — The Chevrolet Volt is the first mass production plug in hybrid available in the United States. A plug in hybrid electric vehicle (PHEV), plug in hybrid vehicle (PHV), or plug in hybrid is a hybrid vehicle which utilizes rechargeable batteries, or …
77Chemical synapse — This article is about chemical synapses of the nervous system. For other uses, see Synapse (disambiguation). Illustration of the major elements in chemical synaptic transmission. An electrochemical wave called an action potential travels along… …
78Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( …
79international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
80modulation — /moj euh lay sheuhn, mod yeuh /, n. 1. the act of modulating. 2. the state of being modulated. 3. Music. transition from one key to another. 4. Gram. a. the use of a particular distribution of stress or pitch in a construction, as the use of… …
