Babel

Babel is the name used in the Hebrew Bible for the city of Babylon.

Babel may also refer to:

People

Places

Tower of Babel

Literature

Film, television and entertainment

East

East is a noun, adjective, or adverb indicating direction or geography. East is one of the four cardinal directions or compass points. It is the opposite of west and is perpendicular to north and south.

Etymology

The word east comes from Middle English est, from Old English ēast, which itself comes from the Proto-Germanic *aus-to- or *austra- "east, toward the sunrise", from Proto-Indo-European *aus- "to shine," or "dawn". This is similar to Old High German *ōstar "to the east", Latin aurora "dawn", and Greek ēōs or heōs.Ēostre, a Germanic goddess of dawn, might have been a personification of both dawn and the cardinal points.

Navigation

By convention, the right hand side of a map is east. This convention has developed from the use of a compass, which places north at the top.

To go east using a compass for navigation, set a bearing or azimuth of 90°.

Cultural

East is the direction toward which the Earth rotates about its axis, and therefore the general direction from which the Sun appears to rise. The practice of praying towards the East is older than Christianity, but has been adopted by this religion as the Orient was thought of as containing mankind's original home. Hence, most Christian churches are oriented towards the east.

Radio

Radio is the use of radio waves is to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

Radio systems need a transmitter to modulate (change) some property of the energy produced to impress a signal on it, for example using amplitude modulation or angle modulation (which can be frequency modulation or phase modulation). Radio systems also need an antenna to convert electric currents into radio waves, and vice versa. An antenna can be used for both transmitting and receiving. The electrical resonance of tuned circuits in radios allow individual stations to be selected. The electromagnetic wave is intercepted by a tuned receiving antenna. A radio receiver receives its input from an antenna and converts it into a form usable for the consumer, such as sound, pictures, digital data, measurement values, navigational positions, etc. Radio frequencies occupy the range from a 3 kHz to 300 GHz, although commercially important uses of radio use only a small part of this spectrum.