Word: thermal
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During its harried 18-month career the Army Air Forces glider program has found the winds of public and official esteem as tricky as the thermal air currents over a mountain peak. Like many another new weapon, the glider was first overlooked, then overdramatized, later overdisparaged...
...without pause. In the past various catalysts*-usually porous, claylike materials-have been used to help break up the complex hydrocarbon compounds and recombine them into more usable form. Catalytic cracking, with various catalysts and conditions of use, can be controlled to a far greater degree than the older thermal cracking, in which reactions are produced by high temperatures and pressure. But coke (carbon) is by the nature of the reaction deposited on the catalyst, affecting the speed and control of the process, and hitherto it has been necessary to call halts while the catalyst was burned...
Arthritis is one of the oldest diseases on earth-fossil remains show that even dinosaurs suffered from it 200,000,000 years ago. Arthritis has always bedeviled the human race. The great thermal baths built by the Romans are monuments to the aching bones of the middle-aged Romans who had it. Today, in the U.S., the 6,850,000 people with swollen arthritic joints far outnumber the sufferers from any other chronic disease (including heart disease, hardening of the arteries, high blood pressure). Arthritis causes more days lost from work than industrial accidents, or any disease except nervous...
Silent Flight. Somewhere above 1,000 ft., gliders are turned loose to soar, dropping a wing to lose altitude quickly, gliding downward to gain speed (which may reach 90 m.p.h.), or "picking up a thermal" to rise. Sometimes they even fly in formation. Another man-made addition to flight skill is the complete loop-the-loop, as exciting in a glider as in the oldtime barnstormers' crates. (Two pilots practicing a dog fight at Twentynine Palms -not a usual glider function -crashed and were killed when their wings touched.) A glider pilot, landing, keeps his plane balancing...
...year under all conditions. Its efficiency averages over 37%, reports Engineer Harold N. Hackett. It uses 1,300 fewer B.T.U. (fuel heat units) to produce a kilowatt-hour than any steam plant in historya saving of about 12%. "Future applications of the [mercury with steam] cycle may exceed 50% thermal efficiency," predicts Hackett...