Isaac newton was born on December 25th, 1642. A newborn infant can see light immediately (although their ability to focus takes a couple of months to develop), so assuming that his eyes were not forced shut for a while after his birth, he would have "discover"ed light on that day.
On the other hand, his optical receptors may have been able to pick up strong light while he was in the womb, if that light was powerful enough to penetrate. The eyes are usually developed after the twelfth week of pregnancy, so he may have actually first discovered light in late June or early July of that year.
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A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles. A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles.
from the day God created himAnother Answer:Some biblical scholars like Archbishop Ussher and Sir Isaac Newton, have calculated via the genealogies given in the Bible, that man was created in 4004 BC (Anno Domini) and this began the calendar for Anno Mundi - year of the world.
1 light year = 9.46*1015 metres.
1 light year = 9.4605284 × 1015 meters
The distance of one light year, in light years, is exactly 1.