free-space radiation

См. также в других словарях:

• Free-space path loss — In telecommunication, free space path loss (FSPL) is the loss in signal strength of an electromagnetic wave that would result from a line of sight path through free space, with no obstacles nearby to cause reflection or diffraction. It does not… …   Wikipedia

• Impedance of free space — The impedance of free space, Z0, is a physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space. That is, Z0 = |E|/|H|, where |E| is the electric field strength and… …   Wikipedia

• directivity diagram of laser radiation in free space — kryptinė lazerio spinduliuotės diagrama laisvojoje erdvėje statusas T sritis radioelektronika atitikmenys: angl. directivity diagram of laser radiation in free space vok. Freiraumlaserrichtdiagramm, n; Laserrichtdiagramm im freien Raum, n rus.… …   Radioelektronikos terminų žodynas

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• Space colonization — Artist Les Bossinas 1989 concept of Mars mission Space colonization (also called space settlement, space humanization, or space habitation) is the concept of permanent human habitation outside of Earth. Although hypothetical at the present time,… …   Wikipedia

• Radiation pattern — Three dimensional antenna radiation patterns. The radial distance from the origin in any direction represents the strength of radiation emitted in that direction. The top shows the directive pattern of a horn antenna, the bottom shows the… …   Wikipedia

• Radiation mode — For an optical fiber or waveguide, a radiation mode or unbound mode is a mode which is not confined by the fiber core. Such a mode has fields that are transversely oscillatory everywhere external to the waveguide, and exists even at the limit of… …   Wikipedia

• space suit — noun 1. : a suit equipped with air supply and other elaborate provisions intended to make life in free space possible for its wearer 2. : g suit * * * space suit, an airtight, pressurized suit that protects travelers in outer space from radiation …   Useful english dictionary

• Space medicine — is the practice of medicine on astronauts in outer space.Who benefits from space medicine research?Astronauts are not the only ones who benefit from space medicine research. Several medical products have been developed that are space spinoffs,… …   Wikipedia

• Space manufacturing — is the production of manufactured goods in an environment outside a planetary atmosphere. Typically this includes conditions of microgravity and hard vacuum.Manufacturing in space has several potential advantages over Earth based industry.# The… …   Wikipedia

• Radiation poisoning — Radiation poisoning, also called radiation sickness or a creeping dose , is a form of damage to organ tissue due to excessive exposure to ionizing radiation. The term is generally used to refer to acute problems caused by a large dosage of… …   Wikipedia