Colored filters enhance lunar details by improving contrast and reducing glare. Different colored filters highlight various features; yellow and blue filters are particularly useful. Neutral-density ...

Experiments that reveal the weirdness of the quantum world usually involve precise and highly specialized equipment. But now physicists in Switzerland and the UK have proposed a way of using human ...

Light corn syrup is used to rotate the plane of polarized light on the stage of an overhead projector. A polarizing filter allows only those photons with electric fields oscillating in a single plane ...