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simple
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Frame of Reference
FRAME OF REFERENCE CONCEPT Among the many specific concepts the student of physics must learn, perhaps none is so deceptively simple as frame of reference. On the surface, it seems obvious that in order to make observations, one must do so from a certain point in space and... Read more |
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Simple machines
Machines, simple A simple machine is a device for doing work that has only one part. Simple machines redirect or change the size of forces, allowing people to do work with less muscle effort and greater speed, thus making their work easier. There are six kinds of simple machines: the lever, the... Read more |
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cruise missile
cruise missile low-flying, continuously powered offensive missile designed to evade defense systems. Although the German V-1 (1944) was a simple cruise missile, the cruise missile did not realize its potential until the 1970s, when the United States sought to develop a relatively inexpensive method... Read more |
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simple commodity production
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Disk-winged bats
Thyropteridae (disc-winged bats, sucker-footed bats; order Chiroptera, suborder Microchiroptera) A family of bats in which there are adhesive sucker discs, borne on stalks on wrists and ankles, used when the animals roost in smooth banana leaves that have not yet opened and therefore are rolled. The... Read more |
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Shoelace
Shoelace Background It is understand how important shoes are for protecting feet from hazards and weather, and proper fit is necessary to maximize protection and comfort for the shoe's wearer. The shoelace is one way to ensure the proper fit, and a simple pair of laces,... Read more |
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decoupage
découpage , any process of decorating surfaces in which paper cutouts made of new materials completely cover the surface. These cutouts are attached to the work by pasting or gluing. The simple techniques involved in this form of collage make it an easily accessible art form.... Read more |
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Rube Goldberg
Rube Goldberg (Reuben Lucius Goldberg), 1883-1970, American cartoonist and sculptor, b. San Francisco. After drawing cartoons for San Francisco newspapers, he moved to New York City. There he worked for the New York Evening Mail until his cartoons became syndicated in 1921. Goldberg originated... Read more |
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Gases
GASES CONCEPT The number of elements that appear ordinarily in the form of a gas is relatively small: oxygen, hydrogen, fluorine, and chlorine in the halogen "family"; and a handful of others, most notably the noble gases in Group 8 of the periodic table. Yet many substances can exist in the form of... Read more |
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Come fry with me; Electromagnetic weapons.(Electromagnetic weapons may soon...
...weapons may yet allow America...the same stuff as radio...vircator works by discharging...bombs or cruise missiles. Deployed...systems, from missile targeting...incoming missiles such as China...development of more sophisticated unmanned...components of a ... |
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WEAPONS: Terrorists use our technology against us
...ourselves. It works like this...to the big stuff, we are...point is the cruise missile: for a long...and most sophisticated precision...cruise missiles may be as...ballistic missiles. This is...on cruise missiles, believing...ballistic-missile ... |