Willebrord Snel (1580â1626) Netherlands. Although he discovered the law of refraction, a basis of modern geometric optics, in 1621, he did not publish it and only in 1703 did it become known when Huygens published Snell's law in Dioptrica..
MKDS: Heavy. R.O.B. (short for Robotic Operating Buddy) is an accessory for the Nintendo Entertainment System who has recently made appearances in a few Mario games. In Japan, it was known as the Famicom Robot, which was short for Family Computer Robot.
Mario(JP) is a Nintendo video game character and icon who stars in the Mario series. He and his younger brother Luigi are Nintendo's most renowned characters; his games have sold over 262 million units worldwide. This and other key factors has led him to become the defining video game character and Nintendo's mascot.