Photon epoch
- 光子时期（光子时期是宇宙演化早期的阶段，由光子主导。开始于大爆炸后的10秒钟，原子核在几分钟内形成，其余时间宇宙包含热且浓密的电浆）
Photon epoch
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abstract:
In physical cosmology, the photon epoch was the period in the evolution of the early universe in which photons dominated the energy of the universe. The photon epoch started after most leptons and anti-leptons were annihilated at the end of the lepton epoch, about 10 seconds after the Big Bang.
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