Word: argonant
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...specialists in San Francisco were also intrigued by a new surgical laser called the YAG (for its components of yttrium, aluminum and garnet). Unlike the argon laser, which has been used by eye surgeons for nearly two decades, the YAG does not produce its effect by burning. Instead, it concentrates light energy into very short, intense pulses that create tiny, 1/10-mm cuts. "It causes a very small explosion," explains French Surgeon Daniele Aron-Rosa, who, along with Swiss Surgeon Franz Fankhauser, is credited with inventing YAG surgery...
Purcell also showed how a rocket launches and what the gas argon would like like from the viewpoint of a molecule using polaroid transparencies and an overhead projector...
...instrument packages into the Venusian atmosphere. Among the findings: the neighboring planet has an extraordinary five-layered cloud cover, is riddled by continuous lightning bolts and scarred by a rift valley and mountain peak more grandiose than any on earth, and has totally unexpected abundances of primordial neon and argon. Their presence suggests new ideas about the nature of the great cloud of gases and dust from which the sun and planets were born...
Johanson's announcement, however, left most colleagues puzzled. The bones have been around for more than four years now, long since dated by potassium-argon tests, and many anthropologists who have studied them are generally convinced that Lucy is an Australopithecus africanus, not some new species...
Interpreting these finds requires even more skill. The age of a fossil can often be determined by analyzing the layer of rock or soil in which it was found and determining, often by the so-called potassium-argon method, just how old the layer is. Interpreting the messages of the fossil is usually more difficult. ; The first step in studying a fossil, ; which is often fragmented, is to separate -it from its rock or soil matrix. Next the ! fragments are assembled, a task considerably harder than putting together a jigsaw puzzle with pieces all the same color...