Assertion: heavy water's neutron | /r/CapableOf | slow down in collision
Facets:
value: with a moderator
type: OTHER
value: very far
type: DEGREE
value: with hydrogen
type: OTHER
Source sentences:
text: However, in a collision with Hydrogen (mass 1), a neutron can in fact slow down very far.
text: In August 1945, when information of the atomic bombing of Hiroshima was relayed to the scientists of the German nuclear program, interred at Farm Hall in England, chief scientist Werner Heisenberg hypothesized that the device must have been "something like a nuclear reactor, with the neutrons slowed by many collisions with a moderator".