History of Eyeglasses and Sunglasses. The inventor of the first spectacle lenses is unknown. Roman tragedian Seneca (4 BC -65AD) is said to have used a glass globe of water as a magnifier to read ''all the books of Rome''. It's been reported that monks in the middle ages used glass spheres as magnifying glasses to read.
exists and is an alternate of . The Planet Venus has the slowest rotation rate because one day there is longer than the year on Venus or longer than its revolution around the sun. The Planet Venus has the slowest rotation rate because one day there is longer than the year on Venus or longer than its revolution around the sun.
Venus takes 243 days to spin on its axis relative to the background stars - the slowest, while it takes 224.7 days to orbit the sun. Although its spin on its axis is longer thâ¦at its orbital period, an apparent day is 116.75 days, since it spins in the other direction to Earth and most other planets.