parabolic dish वाक्य

However, on a hazy or foggy day, light is diffused in all directions through the atmosphere, which reduces the efficiency of a parabolic dish significantly.
The first purpose-built radio telescope was a 9-meter parabolic dish constructed by radio amateur Grote Reber in his back yard in Wheaton, Illinois in 1937.
To that end the tower was equipped with two parabolic dish antennas, each in diameter, which were mounted on the lower portion of the tower.
The communication system includes a diameter parabolic dish high-gain antenna to send and receive radio waves via the three Deep Space Network stations on the Earth.
A gigantic gear raises and lowers the elevation of the huge _ but delicately balanced _ parabolic dish and the offset arm that angles over it.

The expense of a multiple driver loudspeaker is typically higher than a reflector-type parabolic dish due to the increased number of speaker driver components and amplifier channels.
Such weapons do not use parabolic reflectors which necessarily limit the number of drivers a large area of drivers aimed at the reflector would occlude the parabolic dish.
The system worked by having two dipole antennas instead of one, slightly offset on either side of the mounting mast projecting through the middle of the parabolic dish.
A gain of about 15 dB can be expected, however, when the wavelength of the sound becomes comparable with the diameter of the parabolic dish the response falls away.
Designs such as the horn antenna and parabolic dish antenna become more practical at higher frequencies ( shorter wavelengths ) whereas antenna arrays may be practical at any wavelength.