Matches in DBpedia 2015-10 for { ?s ?p "The pit, named after the hard core found in fruits such as peaches and apricots, is the core of an implosion weapon – the fissile material and any neutron reflector or tamper bonded to it. Some weapons tested during the 1950s used pits made with U-235 alone, or in composite with plutonium, but all-plutonium pits are the smallest in diameter and have been the standard since the early 1960s."@en }
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- Pit_(nuclear_weapon) abstract "The pit, named after the hard core found in fruits such as peaches and apricots, is the core of an implosion weapon – the fissile material and any neutron reflector or tamper bonded to it. Some weapons tested during the 1950s used pits made with U-235 alone, or in composite with plutonium, but all-plutonium pits are the smallest in diameter and have been the standard since the early 1960s.".
- Pit_(nuclear_weapon) comment "The pit, named after the hard core found in fruits such as peaches and apricots, is the core of an implosion weapon – the fissile material and any neutron reflector or tamper bonded to it. Some weapons tested during the 1950s used pits made with U-235 alone, or in composite with plutonium, but all-plutonium pits are the smallest in diameter and have been the standard since the early 1960s.".