Film: 3328

Science | 1950 | Sound | B/W

Clip:

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Synopsis:

Atomic or nuclear Energy 1950's

A large neutron target chamber. A short animation shows how ion particles are accelerated in the target chamber. A scientist bolts an element into the target chamber, ready for bombardment. The scientist passes through or by the water screen, the water screen protects the scientist from intense radiation produced by the beams of accelerated particles. The scientist switches on the complicated high frequency installation which takes current to the beam. View of the apparatus that uses neutron beams. Another view of the nuclear scientist, A short shot of the neutron target chamber. A beam of light which is the arc in the centre of the tank, it is surrounded by the pulsation of the accelerated particles. A simple experiment which shows the effects neutrons have on the nucleus: a marble is slid down onto an empty saucer (nucleus), it jumps out. The saucer (nucleus) is filled with marbles (nucleus particles) and a marble (neutron) is slid down into the saucer, this saucer (nucleus) will become unstable and gives off excessive energy as beta and gamma radiation. If the marble (neutron) enters the saucer (nucleus) with a greater energy, one or more nucleus particles (marbles) will fly off, thus neutrons can also eject particles from the atom nucleus causing disintegration. Army marching in a large street. Mussolini. Hitler. Army marching. Hitler. A still of the front page of the Daily express. A group of 1939 atomic scientists. Professor Otto Frisch sits in an armchair in maybe a library, he expresses his concerns about the fact that uranium bombarded by neutrons gave rise to an isotope of barium, he also states that he was able to show experimentally that the uranium nucleus sometime brakes into two halves and a great number of energy is released. A short animation describing uranium 92 and barium 56 in the periodic table. The reconstruction of Frisch's experiment : close up of the ionisation chamber, a scientist places uranium in the ionisation chamber, placed over the end of the bombarding tube (which sends high energy neutrons). The chamber is connected to an oscilloscope. The trace seen on the oscilloscope is made by alpha particles emitted from the radioactive uranium. The scientists switch the high tension set on (to bombard the uranium with neutrons). The trace on the fission pulses on the oscilloscope reveal the large amount of energy released when uranium atoms are split. View of the apparatus used to accelerate particles. A short animation describes atom fission by neutrons. War time images. War time atomic energy research laboratory, probably Los Alamos, U.S.A. A short animation describing a fast reaction to produce an atomic bomb from uranium 238 and uranium 235 (uranium 235 was first produced at the University of Chicago on the 2-12-1942), uranium 235 become bomb material number one, uranium behaviour gives rise to plutonium 239 which became bomb material number two.

General view of probably Los Alamos, U.S.A. Scientists working on the production of the atomic pile (a component of the atomic bomb). A Los Alamos scientist working in the chemical laboratory. A group of Los Alamos scientists handle radioactive material (probably uranium 235 or plutonium 239) very carefully and without much body protection. A short shot of maybe a prototype or of maybe the actual first atomic bomb. Atomic bomb explosion. Another atomic bomb explosion (probably in Hiroshima). Images of Hiroshima after the atomic explosion. People in London celebrating the end of the war. People on Trafalgar Square, London celebrating the end of the war. Professor Einstein records his opinion about the possibility of controlling atomic power to serve mankind. A short animation describes how the atomic pile (part of the atomic bomb) can been turned into an efficient heat engine, that is, the first idea to build an atomic power station. A patient is being examined with the new radioactive tracer techniques (radioactive sodium salt). The scientist notes down the results. Close up of the radioactive counter, they are hoping to establish a test which will be helpful in preventing complications derived from childbirth. Moon and stellar images. United Nations representatives focussing on Great Britain and USSR.


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