例句與造句

1. Robinson Trautman null dusts include the Kinnersley Walker photon rocket solutions, which include the Schwarzschild vacuum.
2. The lower solid curve in the figure represents the efficiency of conventional photon rocket or sail with photon recycling.
3. A photon rocket that uses anti-matter as fuel would be pretty efficient for travelling very close to the speed of light.
4. A "'photon rocket "'is a hypothetical rocket that uses thrust from emitted photons ( radiation pressure by emission ) for its propulsion.
5. The spacecraft uses photon rocket for propulsion, when it lands on Earth, the aliens don't want the emmitted gamma rays to sterilize the local environment.
6. It's difficult to find photon rocket in a sentence. 用photon rocket造句挺難的
7. If you approximate the problem as an ideal photon rocket, then the change in velocity w . r . t . to the initial rest frame of the asteroid is:
8. In reality the radius it can be a bit less than this because the ideal photon rocket model overestimates the propulsion from annihilation . talk ) 18 : 08, 10 November 2012 ( UTC)
9. In 1969, he published an exact null dust solution to the Einstein field equation and thereby created the photon rocket, an object with mass propelled by the emission of light ( radiation without mass ).
10. An antimatter-matter powered photon rocket would ( disregarding the shielding ) obtain the maximum " c " specific impulse; for this reason, an antimatter-matter annihilation powered photon rocket could potentially be used for interstellar spaceflight.
11. An antimatter-matter powered photon rocket would ( disregarding the shielding ) obtain the maximum " c " specific impulse; for this reason, an antimatter-matter annihilation powered photon rocket could potentially be used for interstellar spaceflight.
12. More recently, Friedwardt Winterberg proposed that a matter-antimatter GeV gamma ray laser photon rocket is possible by a relativistic proton-antiproton pinch discharge, where the recoil from the laser beam is transmitted by the M鰏sbauer effect to the spacecraft.
13. The only concept known to reach relativistic velocities uses a matter-antimatter GeV gamma ray laser photon rocket made possible by a relativistic proton-antiproton pinch discharge, where the recoil from the laser beam is transmitted by the M鰏sbauer effect to the spacecraft.
14. If a photon rocket begins its journey in low earth orbit, then one year of thrusting may be required to achieve an earth escape velocity of 11.2 km / s if the vehicle is already in orbit at a velocity of 9, 100 m / s.
15. A laser could be used as a photon rocket engine, and would solve the reflection / collimation problem, but lasers are absolutely less efficient at converting energy into light than blackbody radiation is & mdash; though one should also note the benefits of lasers vs blackbody source, including unidirectional controllable beam and the mass and durability of the radiation source.
16. The upper solid line represents schematically an example the efficiency of a recycling photon rocket, such as a PLT . At low ?, the recycling rocket can have a high thrust amplification factor ( in this example, ~ 3, 000 ), however as ? approaches 1, the amplification factor converges to 1 and the overhead of recycling is unneeded.