Word: hydrogen
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Dates: during 1980-1989
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...bomb. Military experts point out that the neutron bomb is not a bomb at all, since it is not designed to be dropped from a plane. It is actually a "clean" nuclear warhead, small enough to fit onto a missile or even into a 155-mm howitzer. A modified hydrogen bomb, the ERW produces minimal heat and blast and virtually no residual radiation and fallout (see chart...
...first envisioned in the 1950s by a group of Rand Corp. scientists. They were seeking ways of modifying the hydrogen bomb to enhance and focus its radiation effects while reducing its devastating explosive blast...
...escape valves has heat - apparently from the decay of radioactive materials - that has been years up within the earth since its birth billions of years ago. The earth's surface once bubbled with thousands of volcanoes. Their vapors formed the first atmosphere - a noxious brew of hydrogen, methane, ammonia and water - and set the stage for the initial stirrings of life...
...Nothing will ever equal that moment of joyous excitement," wrote Jacques Charles after making man's first ascent by hydrogen balloon in 1783. "It was not mere pleasure; it was perfect bliss...
...helium-filled tubes wired to an external oscilloscope. The detection apparatus was shielded in lead and cadmium cylinders and a foot-thick "pot" to block everything but neutrinos. As the particles barreled through the heavy water, some scored bull's-eye hits on the nuclei of its hydrogen atoms, which contain an extra neutron. These collisions produced other particles, including more neutrons that struck the helium-filled tubes and registered on the oscilloscope...