Astronomers have constructed telescopes of every kind - massive observatories designed to pick up faint traces of light ...

The autumnal equinox brings fall to the Northern Hemisphere today as the sun passes directly over the equator at noon. But ...

Light changes speed as it passes from one medium to another. This is called refraction. The frequency of light does not change as it refracts. The refractive index of a material is a measure of ...

The dotted line is the normal (perpendicular) to the surface. In refraction calculations, angles are always measured between rays and the normal. The change in direction of a ray depends on the ...

HAPPY EQUILUX! 12 hours of of light and dark occurs a few days after the autumnal equinox and a few days before the vernal ...

Unplugged: Refraction Sessions - Gabi Fortune, GNESYER, Jackson Wilcox, Jesse Tuhaka and Livv return for Part Two of the Unplugged sessions.Indulge in the company and ...

Mark Zuckerberg has demonstrated Orion, Meta's prototype holographic glasses that take mixed reality to a whole new level.

Somewhere Tim Cook just threw the Apple Vision Pro against a wall. All that time. All that energy. All that hype. And in one ...

Autumn brings longer, cooler and clearer nights. Summer’s bright constellations and dense star clouds of the Milky Way give ...

Perhaps the most interesting feature of the Orion glasses are the lenses, which are not made from glass or plastic. Instead, ...

September 22 is the autumnal equinox in the northern hemisphere. This is a day when the hours of daylight and nighttime are ...

The exact time of the fall equinox changes slightly each year. This year, the equinox arrives Sept. 22 at 8:43 a.m. Eastern ...