source of gamma rays造句

例句与造句

1. M87 is a very strong source of gamma rays, which are the most energetic rays of the electromagnetic spectrum.
2. Natural sources of gamma rays on Earth are observed in the gamma decay of radionuclides and secondary radiation from atmospheric interactions with cosmic ray particles.
3. Supernovae, the source of gamma rays, usually leave behind remnant clouds of dust, shock waves and black holes that can be detected for millions of years.
4. NASA scientists also discovered that pulsars, which are  rotating neutron stars that emit a beam of electromagnetic radiation,  are the best sources of gamma rays.
5. More recent experiments have definitely ruled out the emission model : the earliest were those of Filippas and Fox ( 1964 ), using moving sources of gamma rays, and Alv鋑er et al . ( 1964 ), which demonstrated that photons didn't acquire the speed of the high speed decaying mesons which were their source.
6. It's difficult to find source of gamma rays in a sentence. 用source of gamma rays造句挺难的
7. :I don't personally understand astronomy very well, but after a Google search, it seems that there have been 300 identified sources of gamma rays, which black holes are believed to spew out . 100 of these black holes are are the " brightest supermassive " ones of the bunch, found in other galaxies.
8. Clathrates have been used for separation of He and Ne from Ar, Kr, and Xe, and also for the transportation of Ar, Kr, and Xe . ( For instance, radioactive isotopes of krypton and xenon are difficult to store and dispose, and compounds of these elements may be more easily handled than the gaseous forms . ) In addition, clathrates of radioisotopes may provide suitable formulations for experiments requiring sources of particular types of radiation; hence . 85 Kr clathrate provides a safe source of beta particles, while 133 Xe clathrate provides a useful source of gamma rays.