Only in Allentown. Only in Allentown could the creative spirits of the past and present come together to launch a public art project that involves the casting of light-refracting rainbow prisms onto ...

Rainbows are a visual phenomenon made by light reflecting through raindrops like a prism, according to Rainbow Symphony.

IN such elementary text-books on geometrical optics as I have consulted it has always seemed to me that the writers have found a difficulty in presenting a precise direct proof of the theorem that ...

Harry Potter fans, do not despair! Invisibility cloaks may be a long shot, but last year physicists demonstrated technology that might someday hide you from radar. Now, two groups of researchers have ...

White light can be blinding, cold, unforgiving. Our physical reality often finds it too much as well, splitting it apart any chance it gets. Plants are green because such wavelengths of light help it ...

At least three separate optical phenomena are visible in the new images. Each of which is created by light refracting through millions of perfectly aligned ice crystals in the upper atmosphere. When ...

Halos are light rings around the sun or moon, created by the refraction of light “off ice crystals present in a thin veil of cirrus clouds,” according to the National Weather Service. Chloe Brady, ...