1) The act or process of transmitting. The fact of being transmitted.
Verbal noun of → transmit.
bând-e tarâgosil (#)
Fr.: bande de transmission
The frequency range above the cutoff frequency in a waveguide or transmission line.
Fr.: coefficient de transmission
The ratio given by the → amplitude (or energy) of a transmitted wave divided by the amplitude (or energy) of the incident wave.
Fr.: réseau par transmission
A diffraction grating that has grooves ruled onto a transparent material so that a beam of light passed through the grating is partly split into spectral orders.
Fr.: perte de transmission
A decrease in power in transmission from one point to another.
Fr.: système de transmission
An assembly of elements which are capable of functioning together to transmit power or signals.
Fr.: émission à deux photons
The simultaneous emission of two photons whose sum of energies is equal to that of a single electron transition. The energy of each individual photon of the pair is not fixed, so that the spectrum of two-photon emission is continuous from the wavelength of that transition to infinity. In practice, there is a peak in wavelength distribution of the emitted photons. Two-photon emission is studied atomic physics with application in astrophysics, as it contributes to the continuum radiation from → planetary nebulae. It was recently observed in condensed matter and specifically in → semiconductors.
weak emission-line central star (wel)
setâre-ye markazi bâ xatt-e gosili-ye nezâr
Fr.: étoile centrale à faibles raies d'émission