Watching the eclipse? Wear red and green to see optical illusion – National
As space enthusiasts in some parts of Canada gear up to experience a once-in-a-lifetime total solar eclipse on Monday, they should know that red and green are optimal colours to wear during the event. This is because of a phenomenon called the Purkinje effect, first described by Czech physiologist Johannes Purkinje in 1823. Purkinje found … Read more
