Physicist Sir John Pendry, known globally for his research into refractive indexes and creation of the first practical Harry Potter-like "invisibility cloak," will deliver the keynote address as part ...

Please provide your email address to receive an email when new articles are posted on . AMSTERDAM — Corneal ablation is a remarkably successful procedure, but it produces a number of changes that need ...

IN preparing an elementary lecture on Light, intended to be given at the Taunton College School, I have had to consider how best to explain the somewhat abstruse principle of optical refraction. It is ...