photon

• Both photons and electrons show an apparent "duality" .
  光子和电子都表现为外观上的“二象性”。
• When an atom shoots out a photon of light, it recoils like a gun .
  原子发出光子时，会象枪一样地反冲。
• A photon leaving the sun will be "retarded" by the sun's gravity .
  离开太阳的光子因受太阳引力而“减速”。
• Photons can be created freely as long as energy is available .
  只有要足够的能量，光子随时随地都可以产生。
• The energy of the photon gives its color, or wavelength .
  光子的能量决定了光子的颜色，也就决定了它的波长。
• When a photon collides with a molecule, several things can happen .
  当光子与一个分子碰撞时，可发生几种情况。
• Such photons will excite the higher vibrational levels of the oh molecule .
  这种光子会激发OH分子的较高振动能级。
• Highly reactive and delocalized electrons would react with photons .
  高度活性和非定域的电子应该能够与光子起反应。
• The chance that an electron absorbs more than one photon is negligible .
  一个电子吸收一个以上的光子的机会是极少的。
• Spontaneous photons initiate stimulated emission and the chain reaction begins .
  自发发射的光子引起受激发射，开始了链式反应。