Salvino D'Armate is most often credited with the invention of the first wearable eye glasses around 1284. The earliest glasses was prescribed for hyperopia and perched on the bridge of nose.Sunglasses as we know them today was invented in 1929 by Sam Foster.
Outer Solar System. The planet Jupiter has the shortest day of all the eight major planets in the Solar System. It spins around on its axis once every 9 hr 55 min 29.69 sec. Jupiter has a small axial tilt of only 3.13 degrees, meaning it has little seasonal variation during its 11.86-year-long orbit of the Sun.
At what rate does the length of the days change after the winter solstice? So December 21, the winter solstice, is the shortest day of the year for the Northern Hemisphere. That makes the winter solstice a day that encourages optimism because after it, the days only get longer. But how many seconds or minutes do they increase each day? I am sure this depends on what latitude the length is measured from. My guess is that the days increase more slowly at first because of the earth's elliptical orbit, but I am not sure.