Long before science began, light was considered primal, as the Egyptian sun god Aten sustained all, and in the bible, light was created before the sun, moon, stars, or man. In physics today, light is made of the simplest of all particles, and it is all around us, but how it operates remains a mystery for as Einstein wrote not long before he died:
“All these fifty years of conscious brooding have brought me no nearer to the answer to the question ‘What are light quanta?’ Nowadays every Tom, Dick and Harry thinks he knows it, but he is mistaken.” (Walker, 2000), p89.
Even today, science still can’t answer the apparently simple question, what is light?
QR3.1.1 Light is a Mystery
QR3.1.2 Particle or Wave?
QR3.1.3 The Double-Slit Experiment
QR3.1.4 The Copenhagen Compromise
QR3.1.5 How Come The Quantum?