fresnel zone वाक्य
उदाहरण वाक्य
मोबाइल
- Fresnel zone antennas belong to the category of reflector and lens antennas.
- The mirror represents a flat roof within region 1 of the Fresnel Zone.
- For historical reasons, a flat Fresnel zone antenna is termed a Fresnel zoneplate antenna.
- Now the zone surrounding the RF LoS is said to be the Fresnel zone.
- Fresnel zone plates are devices that focus light on a fixed point in space.
- Based on analysis by Augustin-Jean Fresnel, they are sometimes called "'Fresnel zone plates "'in his honor.
- Sure, there are still a slew of experiments with male arboreal crickets and Fresnel Zone Plates.
- The pinhole in this case is equivalent to a Fresnel zone plate with a single zone.
- This, to some extent, provided a commercial push to the research on Fresnel zone antennas [ 1-5 ].
- The strongest signals are on the direct line between transmitter and receiver and always lie in the first Fresnel zone.
- In the above simulations with the 4 mm diameter disc the adjacent Fresnel zone has a width of about 77 �m.
- Random edge corrugation whose amplitude is of the same order as the width of that adjacent Fresnel zone reduces the Arago spot intensity.
- Composed of a series of discs centered about an origin, Fresnel zone plates are manufactured using laser pulses, which embed voids into reflective lens.
- This is caused by diffraction effects : for the best propagation, a volume known as the first Fresnel zone should be kept free of obstructions.
- "' David Sayre "'( March 2, 1924 February 23, 2012 ) was an American scientist, credited with the early development of Fresnel zone plates.
- Until now, resolutions of 30 nanometer are possible using the Fresnel zone plate lens which forms the image using the soft x-rays emitted from a synchrotron.
- If the diameter of the circular hole in the screen is sufficient to expose two Fresnel zones, then the amplitude at the center is almost zero.
- A zone plate consists of a set of radially symmetric rings, known as Fresnel zones, which alternate between interferes at the desired focus, creating an image there.
- Despite its weak reflectance ( R = 0.25?2 ? 2 at T = 1.3 ?10-4 K ), graphene has utility as a lens for Fresnel zone plates.
- He suggested to use the newly developed electron beam lithography apparatus at IBM to produce Fresnel zone plates, a type of X-ray lens now widely used in Synchrotron facilities.
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