Word: electronic
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...most familiar techniques for teaching elementary electricity is to compare the flow of electrons through wires to the passage of fluids through pipes. The analogy is so valid that scientists are now changing it from a textbook explanation to practical application. They are building fluid circuits that supplement and even replace some electronic devices. By controlling and amplifying the flow of fluids (either gases or liquids), just as electron flow is controlled and amplified in electronic circuits, they have conjured up a variety of odd new fluidic devices that offer valuable improvements on their electronic counterparts...
...marble walls were the world's most carefully designed and elaborately equipped facilities for research into the causes and prevention of blindness. The institute's research complex is staffed not only by ophthalmologists, but also by anatomists, physiologists, biochemists, pathologists and a microbiologist. It boasts three costly electron microscopes to permit research to concentrate on the ultrafine structure of the eye. All rooms have closed-circuit television for the staff to monitor patients' activities and check on their safety. Patients who have no useful vision will be able to entertain themselves with talking books and piped music...
Strong Attraction. Unable to reach the sulphur atoms to which they are strongly attracted, the sodium atoms each give up an electron to become sodium ions that are able to pass through the ceramic. The extra electrons, having no other way to rejoin the ions, flow through an external circuit that carries them to the sulphur electrode. That electron flow is an electric current...
Sound & Fury. Using 700-ton magnets, Harvard's cyclotron fires a proton beam with the force of 160 million electron volts. But after leaving the cyclotron, the protons travel a precise and predictable distance before they release their power. Careful positioning of the patient allows the beam to pierce the skin with little damage before releasing all its energy and destroying a specific target deep inside the body-such as the pituitary gland, perhaps, or a brain tumor...
...flight's one notable failure -the unexpected early end to Astronaut Richard Gordon's space walk - provided scientists with valuable data that may help prevent similar problems on future missions. It was also a humbling reminder that for all his powerful rockets, com plex capsules and sophisticated electron ics systems, man's frail frame itself is the limiting factor in space exploration...