| 单词 | photon rocket |
| 释义 | > as lemmasphoton rocket photon rocket n. a rocket propelled by the backward ejection of photons. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > spacecraft > rocket > [noun] rocket1919 moon rocket1921 space rocket1928 space gun1929 step rocket1932 ion rocket1936 photon rocket1949 rockoon1953 space launcher1955 launcher1958 cosmic rocket1959 ullage rocket1961 1949 Jrnl. Brit. Interplanetary Soc. 8 242 Two possible schemes for utilizing nuclear energy are then considered, the first using a nuclear ‘boiler’ to heat a working fluid which is then expanded through a nozzle in the normal way and the second using the energy direct in a ‘photon’ rocket. 1958 C. C. Adams et al. Space Flight 347 Others ponder photon rockets driven by parallel beams formed by properly designed reflectors. 1994 New Scientist 17 Sept. 15/3 Einstein's field equations of gravity describe the gravitational field produced by particular distributions of mass, and Bonnor used an exact solution of the equations to describe such a ‘photon rocket’. < as lemmas |
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