| heliogram |
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noun
- A message transmitted by a heliograph.
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| heliograph |
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noun
- An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
- A heliogram.
- An instrument for measuring the intensity of sunlight.
- A device for photographing the sun.
- (obsolete) A photograph.
verb
- (transitive) To send a message by heliograph.
- (intransitive) To send a heliograph.
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| helioscope |
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noun
- An apparatus for viewing the sun without injuring the eye
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| heliostat |
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noun
- A device, consisting of a mirror turned by clockwork, to reflect the light of the sun in some fixed direction; now used with some measuring device to continuously monitor the sun's output
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| hologram |
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noun
- A three dimensional image; unlike regular images which are usually two dimensional, a three dimensional image or hologram, appears to "pop out" of the media which it is printed on or illuminated from. Hologram images are usually created by using a single laser beam which is split and splashed onto the object and finally onto the film.
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| holograph |
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noun
- A hologram.
- A handwritten document, especially a letter, deed, or will, that is solely the work of the person whose signature it bears; a manuscript.
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| holography |
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noun - (physics) a technique for recording, and then reconstructing, the amplitude and phase distributions of a coherent wave disturbance; used to produce three-dimensional images or holograms
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| hue |
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noun (plural: hues)
- Color or shade of color; tint; dye.
- livid with the hue of death
- ::— Wikipedia:Mary W. Shelley, Mary W. Shelley
- Character; aspect.
- The characteristic related to the light frequency that appears in the color; It can be, from lower to higher wave frequencies, respectively: red, yellow, green, Cyan or blue. In digital arts, in HSV color, it's used together with saturation and value.
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| hydroscope |
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noun
- A device for viewing objects below the surface of the water.
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