COMPUTER experts keep reassuring us that Man and his mind will never be replaced by their electronic marvels. But a small, doughnut-shaped electronic neuron has been announced that artificially duplicates part of the human nervous system. And it carries out learning processes, according to Aeronutronic Division of Ford Motor Co.
Battery made of scrap metal and a pill vial runs for months! By ROBERT E. KELLAND THE salt-water cell powering this transistor radio has all the advantages of a dry cell, costs only pennies to make, and lasts for months. The complete radio receiver, with battery but less earphones, can be built for $3 or less. As shown in the photos, the battery delivers about three-tenths of a volt. The radio consumes only 12 microamps while running, and in actual tests ran three days continuously without any detectable dip in volume.
Prove you're a man to be reckoned withâ€”and the only man who can make the gal in the photo (Fig. 1) blush. Prepare her for the test by painting her cheeks with phenolphthalein solution (from the drug store), and be sure the cheeks are slightly moist when you perform the trick. Ordinarily this solution is colorless, but when a finger (yours) moistened with household ammonia is brought near it, the reaction of the fumes with the solution causes it to turn pink. When the ammonia evaporates, the cheeks lose their color.
‘Seeing Things’ with Electrocular YOU can look two ways at once with this 30-oz. electro-optical viewing device. The Electrocular uses a miniature cathode ray tube 7 in. long, a deflecting mirror, a focusing lens, and a dichroic filter viewing eyepiece to present a TV-type image without distracting from the work in front of you. The […]
As any budding young astronaut will tell you, his most important piece of equipment is a realistic helmet with light, radio, oxygen tanks, and plenty of colorful armor. WETHER they're solving re-entry problems on the living room banister or stalking Martians in the orchard, junior spacemen need plenty of imagination-inspiring equipment. So vital a piece as the helmet should be built at home where the astronaut can help and be sure the construction meets space-age requirements.