1·More than the physical reality of photons or sound waves, perception is a product of the brain.
与光子或声波的物理实体不同，感知是大脑的产物。
2·UHECRs tend to collide with photons of the cosmic microwave background—pervasive radiation that is a relic of the early universe.
UHECRs 往往会与宇宙微波背景中的光子相撞，这种辐射是早期宇宙的遗迹，无处不在。
3·Photons have no mass – they are weightless.
光子没有质量——它们是没有重量的。
—— 《柯林斯英汉双解大词典》
4·Then, they calculated what fraction of these photons made it all the way to the intergalactic medium, which at the time was hydrogen.
然后，他们计算出这些光子中有多少一路到达星系际介质中，当时的星系际介质就是氢。
5·These speedy electrons interact with photons in the galactic halo, boosting some of them up to the gamma-ray energies observed in the bubbles.
这些高速电子与银河晕的光子相互作用，将它们中的一些激发，使之成为泡泡中观测到的伽马射线。
1·She uses these pulses to determine how to polarise the photons she sends back.
她利用这些脉冲检查她送回的光量子是如何极化的。
2·Technophiles were impressed with the achievement of making millions of photons march in lockstep, but unable to see any real-world USES for it.
那个时代的科技爱好者们惊叹于激光器使数以百万计的光量子步调一致的能力，但却没有看到它在现实生活中的用途。
3·The degradation effect of Trace Benzene in water was studied by using special photons technique.
本文研究了特种光量子技术对水体中微量苯的降解情况。