Word: electronics
(lookup in dictionary)
(lookup stats)
Dates: during 1980-1989
Sort By: most recent first
(reverse)
Meselson, an authority on chemical weaponry, based his hypothesis on studies of tiny samples of yellow rain collected in Southeast Asia. Electron microscopy disclosed that the samples consisted primarily of pollen husks from tropical plants favored by honeybees. Meselson then compared the substance with bee droppings collected around Harvard and found them remarkably similar, right down to the presence of a bee hair...
DIED. Albert Claude, 84, Nobel-prizewinning Belgian-born biologist who pioneered the use of the electron microscope and the centrifuge as tools in cell research, becoming in 1933 the first to isolate and chemically analyze a cancer virus, and in 1945 to publish the first detailed view of a cell and its structure; in Brussels...
...scientists figured that they would get just one boson in a billion collisions. It would also be extremely shortlived, vanishing in less than a billionth of a billionth of a second.) When the CERN machine went back on line last fall, reaching energies of more than 540 billion electron volts, Rubbia's team identified at least five collisions that indicated the presence of both W+s and W¯s. They did not, however, find...
...quotation marks that follow it. It has been wired to gather up messages that appear between quotation marks and translate them, character by character, into sequences of numbers. These numbers, in turn, are translated into a corresponding sequence of electrical signals. These signals are sent to an electron "gun" housed in the vacuum tube behind the computer's video screen. This gun, following the sequence of signals, fires bursts of electrons at the back side of the screen. The electrons strike bits of phosphor that coat the screen and energize them, lighting up a pattern of dots. These dots...
Thankfully, the programmer does not have to worry about every electron and phosphor dot. He has enough on his hands typing his commands into the computer and testing them to see if they do what he meant them to do. Even a program for playing blackjack can quickly grow to be hundreds of lines long, each line densely packed with convoluted commands and alphanumerical characters. If there is even one character out of place in those hundreds of lines, chances are the program will not work properly. These software "bugs," as programming mishaps are called, can take weeks to find...