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.
Rotation about its axis = 153.3 hours So the slowest planet is Venus whose period of rotation about ts own axis is longer than its year. The fastest is Jupiter - and its quick rotation gives it a squashed appearance because of 'centrifugal force' making the planet bulge out at the equator. The rotation on its own axis is normally what we call the planet's 'day'. On earth, of course, a day is thought of as equalling 24 hours. This refers to a <i>Solar</i> Day (ie the time for the earth to rotate once on its axis so that the sun appears again in exactly the same place in the sky the next day.