Random Image for ffm
Image originally shown at http://www.learn-in-asia.com/Jeremiah_LIA/LeeFFM1.jpg
Image for ffm
Possible definitions for ffm
FM
Variation of the frequency of a carrier wave (commonly a radio wave) in accordance with variations in the audio signal being sent. Developed by American electrical engineer E. H. Armstrong in the early 1930s, FM is less susceptible to outside interference and noise (e.g., thunderstorms, nearby machinery) than is AM. Such noise generally affects the amplitude of a radio wave but not its frequency, so an FM signal remains virtually unchanged. FM is also better able to transmit sounds in stereo than AM. Commercial FM broadcasting stations transmit their signals in the frequency range of 88 megahertz (MHz) to 108 MHz.
AM
Variation of the amplitude of a carrier wave (commonly a radio wave) in correspondence to fluctuations in the audio or video signal being transmitted. AM is the oldest method of broadcasting radio programs. Commercial AM stations operate in the frequency range of 535 kilohertz (kHz) to 1605 kHz. Because radio waves of these frequencies are reflected back to the earth's surface by the ionosphere, they can be detected by receivers hundreds of miles away. In addition to commercial radio broadcasting, AM is also employed in short-wave radio broadcasts, and in transmitting the video portion of television programs. See also FM.
Amman
City (pop., 1994 est.: 963,000), capital of Jordan. It lies 25 mi (40 km) northeast of the Dead Sea. Amman is by far the largest city of Jordan. Fortified settlements have existed in the area from remote antiquity; the earliest date from the Chalcolithic period (c.4000-3000 BC). As Rabbah, it became the capital of the Ammonites. It was conquered by Egypt's Ptolemy II Philadelphus, who renamed it Philadelphia, a name retained through Roman times. Taken by the Arabs in AD 635, it later went into decline and subsequently disappeared. In 1878 the Ottoman Turks resettled it. When the British set up Transjordan in 1921, Amman became its capital. Its modern development was furthered by Jordanian independence in 1946. Amman has since often had to deal with refugee problems exacerbated by the continuing unrest between Israelis and Palestinians.
arm
Upper limb of a biped, particularly a primate. Primate arms have one long bone, the humerus, in the upper arm above the elbow, and two thinner bones, the radius and ulna, in the forearm. The triceps muscle straightens the forearm at the elbow joint; the brachialis and biceps muscles bend it. Forearm and small muscles in the hand move the hand and fingers. The term may also denote the limb or the locomotive or prehensile organ of an invertebrate (e.g., the ray of a starfish or the tentacle of an octopus).
armor
Protective clothing that can shield the wearer from weapons and projectiles. By extension, armor is also protective covering for animals, vehicles, and so on. Prehistoric warriors used leather hides and helmets. Chinese warriors used rhinoceros skin in the 11th cent. BC, ...
Top words beginning with F: fittiness, flacked, fluoridising, freeswimming, flacourtiaceae, farkleberry, farinha, flashlamp, frostflower, fungal, frailer, foci, forksful, furioso, fehlt, fishery, fructifier, february, flockiest, frypan
Browse the alphabet: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z