1951-06-09 — Page 3

WITHOUT URANIUM

THE CHINA MAIL, SATURDAY, JUNE 9, 1951.

WITH URANIUM

Pigment used in rubber industry is photographed under the electron microscope. At loft, magnified 32,000 times without uranium "shadowing," At right; pigment after'a spraying with uranium atoms shows shadows and, contrasts of smaller particias.

WINDOW TO A NEW WORLD

Win

HIEN

The world was blasted into the atomic age at Hiroshima some years ago, scientists predicted peacetime use of this new force would aid mankind Immeasurably. Now, a little more than five years after, true to their forecast, uranium aloms are playing an im- portant role in industrial research.

A new technique, known as "shadow-casting," makes

it possible for man to see and photograph particles which formerly were not visible even when magnissed as much as 100,000 times.

After obtaining authorisation from the Atomic Energy Commission, scientists at the Goodrich Research Centre, Bruchsville, Ohlo, are spraying objects with fillings from a quarter-pound rod of uranium. Thus, they become corted on one side with a thin film of metal, while areas on the other side receive no coating and appear as deep shadows on pictures which are made on plates in an electron microscope. The outcome of the studies, it is hoped, will bring tougher and longer-wearing rubber for use in existing products and development of new items.

BEFORE the precious uranium rod is put to work in industrial research, it is checked for radioactivity

with Geiger counter by Dr. W. L. Davidson. Pur-

chase was under Atomic Energy Commission licence.

RESEARCH TECHNICIAN looks through magnifying glass at tiny copper dot on which uranium-coated particles are placed for study.

SECOND STEP, in "abador

que of identification of particles

de uranium atoms for spraying,

BEARIUM, ATOMS SUO SPINYOU AT N augun on the sid operailun ja being verforined in a vacuuni sinde

DATED with uranium reach, electrica, mis