Featured Quote
"I regard it as a criminal waste of time to go through the slow and painful ordeal of ascertaining things for one’s self if these same things have already been ascertained and made available by others."
Featured Highlight
"“You’re used to thinking of refraction in terms of cause and effect: reaching the water’s surface is the cause, and the change in direction is the effect. But Fermat’s principle sounds weird because …"
This is a private platform for authorized users only.