| 释义 |
hologram Physics.|ˈhɒləʊgræm|
[f. holo- + -gram.]
A pattern produced when light (or other radiation) reflected, diffracted, or transmitted by an object placed in a coherent beam is allowed to interfere with an undiffracted background or reference beam related in phase to the first (or identical with it); a photographic plate or film containing such a pattern.
When suitably illuminated a photographic hologram causes a two- or three-dimensional image of the original (two- or three-dimensional) object to form in space.
1949D. Gabor in Proc. R. Soc. A. CXCVII. 456 The name ‘hologram’ is not unjustified, as the photograph contains the total information required for reconstructing the object, which can be two-dimensional or three-dimensional. 1952Sci. News XXVI. 40 In the taking of the hologram, the amplitude of the wave scattered by the object is much smaller than that of the primary wave coming from the source. 1956Nature 31 Mar. 613/2 The resultant hologram..was put on to the optical bench. 1964Electronics Weekly 16 Dec. 6/1 A recent demonstration..showed a toy train in accurate three-dimensional representation, using a hologram illuminated from behind by a gas laser. 1966Observer 15 May 13 Every bit of a hologram contains information about the whole scene. So you can snip it into pieces, shine a laser at one of the pieces, and you will see the original scene, only somewhat fuzzier. 1967Applied Physics Lett. XI. 294/2 An investigation here has shown the feasibility of using a deformable film on a solid substrate to record an ultrasonic hologram in a way similar to that in which photographic film records an optical hologram. 1968Ultrasonics VI. 81/1 There may be several intermediary stages before the ultrasound hologram is in the form of a photographic transparency which can be used in the reconstruction process. 1968Times 12 Dec. 15/3 Scientists at the Bell Telephone Laboratories..claim that as many as 1,000 different holograms..can be stored in a crystal of lithium niobate. 1971R. J. Collier et al. Optical Holography x. 298 Holograms can be recorded in a thermoplastic film by causing its surface to deform in accordance with the light intensity variations of holographic interference patterns. |