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Star Trek: The Next Generation: Technical Manual ( ST:TNG TM) is a paperback reference guide detailing the inner and other workings of the fictional Federation starship Enterprise -D and other aspects of technology that appeared in the television series Star Trek: The Next Generation .
A rhombic antenna is made of four sections of wire suspended parallel to the ground in a diamond or "rhombus" shape. Each of the four sides is the same length – about a quarter-wavelength to one wavelength per section – converging but not touching at an angle of about 42° at the fed end and at the far end. The length is not critical ...
Slotted array UHF television broadcasting antenna. As shown by H. G. Booker in 1946, from Babinet's principle in optics a slot in a metal plate or waveguide has the same radiation pattern as a driven rod antenna whose rod is the same shape as the slot, with the exception that the electric field and magnetic field directions are interchanged; the antenna is a magnetic dipole instead of an ...
A wiring diagram is a simplified conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal connections between the devices. A wiring diagram usually gives information about the relative position and arrangement of devices and terminals on the devices, to ...
For more than a year and a half, leaders of Hollywood's actors union have been negotiating with video game companies over a new contract that covers the performers who bring their titles to life.
Thousands of patients who were treated at two hospitals in Portland, Oregon, are being told to get bloods tests because of an "infection control breach" linked to an anesthesiologist that may have ...
A corner reflector antenna is a type of directional antenna used at VHF and UHF frequencies. [ 1][ 2] It was invented by John D. Kraus in 1938. [ 3][ 4] It consists of a dipole driven element mounted in front of two flat rectangular reflecting screens joined at an angle, usually 90°. [ 1] Corner reflector antennas have moderate gain of 10–15 ...
Rectenna. A rectenna ( rectifying antenna) is a special type of receiving antenna that is used for converting electromagnetic energy into direct current (DC) electricity. They are used in wireless power transmission systems that transmit power by radio waves. A simple rectenna element consists of a dipole antenna with a diode connected across ...