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The device uses two hyperbolic mirrors (in contrast to Wells's Heat-Ray, which uses a parabolic mirror) to concentrate light rays in a parallel beam. Larger "hyperboloids" can destroy military ships on the horizon, and those of less power can only injure people and cut electric cables on walls of rooms.
In fact at fifteen I was grinding parabolic mirrors for my amateur telescope." [2] In the 1930s, he married Joey and fathered two children, Richard and Joanne; he now has three grandchildren and three great-grandchildren. He earned an M.A. at UCLA. He published his first science fiction story, entitled "Music of the Spheres" in Amazing Stories ...
Parabolic reflectors are popular for use in creating optical illusions. These consist of two opposing parabolic mirrors, with an opening in the center of the top mirror. When an object is placed on the bottom mirror, the mirrors create a real image, which is a virtually identical copy of the original that appears in the opening. The quality of ...
Pages in category "Children's science fiction novels" The following 200 pages are in this category, out of approximately 328 total. This list may not reflect recent changes .
By using two parabolic cylindric mirrors and one plane mirror, the image of the background is directed around an object, making the object itself invisible - at least from two sides. Invisibility is the state of an object that cannot be seen. An object in this state is said to be invisible (literally, "not visible").
A convex secondary mirror is placed just to the side of the light entering the telescope, and positioned afocally so as to send parallel light on to the tertiary. The concave tertiary mirror is positioned exactly twice as far to the side of the entering beam as was the convex secondary, and its own radius of curvature distant from the secondary.
The Boy Who Reversed Himself (1986) is a science fiction novel by William Sleator. The novel deals with an exploration into other dimensions, and provides a journey into the world beyond our own. The novel deals with an exploration into other dimensions, and provides a journey into the world beyond our own.
Matthew Looney is the title character in a series of four science fiction books for children by Jerome Beatty Jr (1916—2002). Matthew's sister Maria Looney is the title character in Beatty's three subsequent books. The entire Looney series is illustrated by the renowned cartoonist Gahan Wilson.