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 ...

B&W announces its Pi6 and Pi8 true wireless earbuds.

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

Longer nights should be expected amid the beginning of two equinoxes, said the Philippine Atmoshperic, Geophysical, ...

That's actually what we mean by “refraction.” You see it when you look at a straw in a glass of water: The part of the straw underwater doesn't match up with the part above. Why? The bending ...

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

In addition to the objective refraction, the keratometer values and the pachymetry can be determined with precision in a matter of seconds with the PARK 1 ®. The integrated patient data ...

Sony revealed the new PlayStation 5 Pro game console with all new faster gaming features with release date and pre-order ...

The Adirondacks, Catskills, Thousand Island-Seaway, Capital-Saratoga, Central New York, Finger Lakes, and Greater Niagara ...

Fall kicks-in on Sunday Sept. 22. “Autumn” is the season of the year that is the transition period from summer to winter, ...