return-circuit tube
21Valve audio amplifier - technical — Circuitry and performance Characteristics of valves Valves are very high input impedance (near infinite in most circuits) and high output impedance devices. They are also high voltage / low current devices.While valves themselves are described… …
22Law, Crime, and Law Enforcement — ▪ 2006 Introduction Trials of former heads of state, U.S. Supreme Court rulings on eminent domain and the death penalty, and high profile cases against former executives of large corporations were leading legal and criminal issues in 2005.… …
23computer — computerlike, adj. /keuhm pyooh teuhr/, n. 1. Also called processor. an electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Cf. analog… …
24Marshall Amplification — Industry Amplification, Musical Instrument Manufacturing Founded London, United Kingdom (1960) Founder(s) J …
25Transmission line — This article is about the radio frequency transmission line. For the power transmission line, see electric power transmission. In communications and electronic engineering, a transmission line is a specialized cable designed to carry alternating… …
26radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining …
27History of computing hardware — Computing hardware is a platform for information processing (block diagram) The history of computing hardware is the record of the ongoing effort to make computer hardware faster, cheaper, and capable of storing more data. Computing hardware… …
28Elián González affair — The custody and immigration status of a young Cuban boy, Elián González (born December 7, 1993), was at the center of a heated 2000 controversy involving the governments of Cuba and the United States, González s father, Juan Miguel González… …
29History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …
30Terri Schiavo timeline — NOTOC 1963*December 3: Terri Schindler is born in the Huntingdon Valley area of Lower Moreland Township, Pennsylvania.1981* Terri graduates from Archbishop Wood Catholic High School * At 200 pounds, Terri loses 60 lb. with a NutriSystem diet in a …
