transmission density

См. также в других словарях:

• transmission density — noun (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation • Syn: ↑optical density, ↑photographic density, ↑absorbance • Topics: ↑physics, ↑natural philosophy …   Useful english dictionary

• Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …   Wikipedia

• Transmission coefficient — right|frame|An electromagnetic (or any other) wave experiences partial transmittance and partial reflectance when the medium through which it travels suddenly changes.The transmission coefficient is used in physics and electrical engineering when …   Wikipedia

• optical density — noun (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation • Syn: ↑transmission density, ↑photographic density, ↑absorbance • Topics: ↑physics, ↑natural philosophy …   Useful english dictionary

• photographic density — noun (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation • Syn: ↑optical density, ↑transmission density, ↑absorbance • Topics: ↑physics, ↑natural philosophy …   Useful english dictionary

• Low-density parity-check code — In information theory, a low density parity check code (LDPC code) is an error correcting code, a method of transmitting a message over a noisy transmission channel. [David J.C. MacKay (2003) Information theory, inference and learning algorithms …   Wikipedia

• Neutral density filter — Neutral Density Filters are often used to achieve motion blur effects with slow shutter speeds In photography and optics, a neutral density filter or ND filter can be a colorless (clear) or grey filter. An ideal neutral density filter reduces… …   Wikipedia

• Optical density — In optics, density is a unitless measure of the transmittance of an optical element for a given length at a given wavelength λ : [cite book|title=The Focal Digital Imaging A Z|first=Adrian|last=Davies|url=http://books.google.com/books?id=j7l0CxBUw… …   Wikipedia

• Electric power transmission — Electric transmission redirects here. For vehicle transmissions, see diesel electric transmission. 400 kV high tension transmission lines near Madrid Electric power transmission or high voltage electric transmission is the bulk transfer of… …   Wikipedia

• Black facsimile transmission — In telecommunication, the term black facsimile transmission has the following meanings: # In facsimile systems using amplitude modulation, that form of transmission in which the maximum transmitted power corresponds to the maximum density of the… …   Wikipedia

• White facsimile transmission — In telecommunication, the term white facsimile transmission has the following meanings: # In an amplitude modulated facsimile system, transmission in which the maximum transmitted power corresponds to the minimum density, i.e. , the white area,… …   Wikipedia