什么是光，光的产生

自身能发光的物体叫做光源,也就是光，产生？发光源产生的

谁要是能说清楚光是什么？就不只是得Nobel了。
All the 50 years of conscious pondering did not bring me nearer to the answer to the question "what are light quanta". Nowadays every rascal believes, he knows it, however, he is mistaken.

Albert Einstein
(1951 in a letter to M.Besso)

光既是一种波也是一种微粒，光具有波粒二象性，光由光源产生，光源即本身能够发光的物体，够扼要了

光是，微粒，也是电磁波