nuclear

Work is under way to see whether new restraining devices should be installed on all nuclear weapons.

`` Her basic hull form ( a teardrop ) and her nuclear power plant will be used for almost all new submarines, including the potent Polaris missile submarines '', the statement went on.

To meet situations of less than general nuclear war, we continue to maintain our carrier forces, our many service units abroad, our always ready Army strategic forces and Marine Corps divisions, and the civilian components.

Instead, the element is prepared, in milligram amounts, by the neutron irradiation of < sup > 226 </ sup > in a nuclear reactor.

* 1939 – Albert Einstein and Leó Szilárd write a letter to Franklin D. Roosevelt, urging him to begin the Manhattan Project to develop a nuclear weapon.

Most americium is produced by bombarding uranium or plutonium with neutrons in nuclear reactors – one tonne of spent nuclear fuel contains about 100 grams of americium.

In 1950 he also proposed an idea for a controlled nuclear fusion reactor, the tokamak, which is still the basis for the majority of work in the area.

at the peaks of the nuclear test and the Berlin cycles ; ;

Most americium is produced by bombarding uranium or plutonium with neutrons in nuclear reactors – one tonne of spent nuclear fuel contains about 100 grams of americium.

It is not helping them face the moral crisis involved in the use of nuclear energy.

However, physicists distinguish between atomic physics — which deals with the atom as a system consisting of a nucleus and electrons — and nuclear physics, which considers atomic nuclei alone.

Trinitite, the glassy residue left on the desert floor near Alamogordo, New Mexico, after the plutonium-based Trinity nuclear bomb test on 16 July 1945, contains traces of americium-241.

A year later, Lise Meitner and her nephew Otto Frisch verified that Hahn's result were the first experimental nuclear fission.

Fear of a nuclear war spurred the production of public safety films by the United States federal government's Civil Defense branch that demonstrated ways on protecting oneself from a Soviet nuclear attack.

Nearby aquifers contain an estimated 270 billion US gallons ( 1 billion m < sup > 3 </ sup >) of groundwater contaminated by high-level nuclear waste that has leaked out of Hanford's massive underground storage tanks.

Speaking recently in Miami, Governor Rockefeller said that `` to assure the sufficiency of our own weapons in the face of the recent Soviet tests, we are now clearly compelled to conduct our own nuclear tests ''.

He also demanded that Kennedy take additional measures to increase international tension: specifically to crush the Cuban revolution, resume nuclear testing, resist more vigorously admission of China to its lawful seat in the United Nations, and postpone non-military programs at home ''.

neuropathology of nuclear and cosmic radiation ; ;

In nuclear physics, a single stray neutron can result in an prompt critical event, which may be finally be energetic enough for a nuclear reactor meltdown or ( in a bomb ) a nuclear explosion.

They are themselves armed with nuclear warheads.

We simply can't tolerate further Russian weapons, including the possibility of long-range nuclear missiles, being located in Cuba.

Angst was probably first discussed in relation to popular music in the mid-to late 1950s that was popular amongst the nuclear disarmament and antiwar protester subculture.

When the Israeli nuclear program started later that decade, a location not far from the city was chosen for the Negev Nuclear Research Center due to its relative isolation in the desert and availability of housing.

Its power unit, however, was derived from the reactor of the more modern American nuclear submarine Skipjack.

A subvariant of the Sparrow I armed with the same nuclear warhead as the MB-1 Genie was proposed in 1958, but was cancelled shortly thereafter.