Prehistoric Eggs The earliest fossil animal embryos, dating from the Precambrian era, were found by American, Taiwanese, and Chinese scientists in phosphate deposits in China's Guizhou province.…
Ancestor of Mammals Discovered The fossil skull of a 260-million-year-old sheep-sized animal was found near Williston on the Northern Cape, South Africa. It is the most primitive member yet…
—Borgna BrunnerVital Stats of the Universe In one of the most important cosmological discoveries in years, NASA scientists have captured the most precise image of the universe, shedding light on…
HI-TECH IMAGING SURGERY ARTIFICIAL DEVICES FIND OUT MORE
Technology plays an increasingly important role in modern medicine. Today, HI-TECH IMAGING allows doctors to view internal body…
TRANSMITTING TELEVISION SIGNALSSTRIPED SCREENFLAT SCREENDIGITAL TELEVISIONFIND OUT MORETelevision converts the image from a camera lens into a stream of data that can be sent down a cable or…
(Encyclopedia) Thackeray, William MakepeaceThackeray, William Makepeacethăkˈərē [key], 1811–63, English novelist, b. Calcutta (now Kolkata), India. He is important not only as a great novelist but…
(Encyclopedia) DadaDadadäˈdä [key] or DadaismDadadäˈdäĭzəm [key], international nihilistic movement among European artists and writers that lasted from 1916 to 1922. Born of the widespread…
(Encyclopedia)
CE5
Triode electron tube
electron tube, device consisting of a sealed enclosure in which electrons flow between electrodes separated either by a vacuum (in a vacuum tube) or by an…
