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A delay-action bomb is an aerial bomb designed to explode some time after impact, with the bomb's fuzes set to delay the explosion for times ranging from very brief to several weeks. Short delays are used to allow the bomb to penetrate before exploding: "a delay action bomb striking the roof of a tall building will penetrate through several ...
This is a list of Global Boundary Stratotype Sections and Points.Since 1977, Global Boundary Stratotype Sections and Points (abbreviated GSSPs) are internationally agreed upon reference points on stratigraphic sections of rock which define the lower boundaries of stages on the geologic time scale.
The detonation produced a crater 1.9 km (6,200 ft) in diameter and 50 m (160 ft) deep where Elugelab had once been; [9] the blast and water waves from the explosion (some waves up to 6.1 m or 20 ft high) stripped the test islands clean of vegetation, as observed by a helicopter survey within 60 minutes after the test, by which time the mushroom ...
A geologic section has to fulfill a set of criteria to be adapted as a GSSP by the ICS. The following list summarizes the criteria: [2] [3] A GSSP has to define the lower boundary of a geologic stage. The lower boundary has to be defined using a primary marker (usually first appearance datum of a fossil species).
OneGeology is an international collaborative project in the field of geology supported by 118 countries, UNESCO, and major global geoscience bodies.It is an International Year of Planet Earth flagship initiative that aims to enable online access to dynamic digital geological map of the world for everyone.
March 1, 1954: United States detonates 15-megaton hydrogen bomb (Castle Bravo test) allegedly unaware that fallout will reach Rongelap. [8] March 3, 1954: US evacuates Rongelap inhabitants to Kwajalein Atoll. Islanders have vomiting, diarrhea, skin burns, and some later experience hair loss. They were suffering from acute radiation syndrome.
The four-minute warning was a public alert system conceived by the British Government during the Cold War and operated between 1953 and 1992. The name derived from the approximate length of time from the point at which a Soviet nuclear missile attack against the United Kingdom could be confirmed and the impact of those missiles on their targets.
Marzouk was found to be carrying 9.5 pounds (4.3 kg) of Semtex, several packets of TNT, 10 detonators, and an electronic timer—a so-called MST-13 timer—with the word Mebo printed on it. DERA's timer fragment, which was subsequently designated as PT/35(b), would eventually lead detectives via its Swiss manufacturer to Abdelbaset al-Megrahi.