Word: plasticizers
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...power X-ray treatments, e.g., those used in cancer. In the past, uncomfortable plaster casts, straps and sandbags have been used. Now, thanks to cooperation between cancer experts and a geologist, Manhattan's Francis Delafield Hospital has a better method. A rubber bag is half-filled with small plastic "pebbles" and molded around the part of the body to be immobilized. Then the air is withdrawn from the bag. The vacuum "freezes" the plastic pebbles into a solid mass which holds the patient like big, strong hands. After the treatment, air is let into the bag and the cast...
...owns one of the world's best collec tions of Mexican archeological treasures, considers these contemporary masks as fine as those produced 1,000 years ago, and predicts that they will be museum pieces 1,000 years hence. They are, says Rivera, "a genuine expression of the plastic genius of the people of Mexico, combining the traditions of our ancient cultures with the contributions brought by the Spanish invasion. Along with the expressive potency of their forms and colors," Rivera adds darkly, "the masks have the black humor that enables our people to laugh at death and the devil...
...electric arm which Dr. Kessler described was made by International Business Machines Corp. The switches are operated by pressure of the toes. Electric motors supply power to bend and extend the elbow and wrist, to rotate the lifelike, plastic hand and to open and close the fingers and thumb...
Secret is Stretched Plastic...
Studying this method, Land realized that the process might work better on the molecular scale. He finally worked out a means in which a sheet of polyvinyl alcohol a thick plastic--was stretched. In the stretching, the molecules of the plastic would align themselves with their poles in the same direction. Land had a cheap, permanent device that was far more efficient, both in the transmission and the exclusion of light, than was its crystal predecessor...