If the hologram is illuminated with a light source incident at the original reference beam angle but a broad spectrum of wavelengths; reconstruction occurs only at the wavelength of the original laser used.
22.
Beams angle not toward the center of the room, forming a precise, inverted " V, " but all the way across it, such that a room might have a low wall on one side, a high one on the other.
23.
There are different search algorithms, the most commonly used is " sum of absolute differences ", The movement of the kernel across the image can thus be tracked, in principle independent of the beam angle, as opposed to tissue Doppler.
24.
For example, a set designer can create a model of the set in 1 / 4 " scale, the lighting designer can then take the fiber optic cables and attach them to scaled down lighting units that can accurately replicate the beam angles of specified lighting fixtures.
25.
The quest for optical excellence continued with the near projection-quality zoom lens; which featured an unprecedented 8 : 1 ratio, in the shape of a 5 40?beam angle range a feature made more remarkable, by its highly compact design ( see US Patent No . 6046861 ).
26.
On the other hand, with respect to frequency sensitivity, i . e ., how quickly the beam angle scans as the frequency is varied, the partly dielectric-loaded structure can scan over a larger range of angles for the same frequency variation, as it is apparent in Fig . 2, and is therefore preferred.
27.
The satellite then fires a laser beam, the beams direction is defined by the parameters " a " and " b " . " a " is the vertical beam angle, the angle between the beam and equatorial plane, when the beam is projected onto the vertical plane ( which is defined as containing the satellite and the axis of rotation of the body ).
