The Color-Sensitive Cones. In 1965 came experimental confirmation of a long expected result - there are three types of color-sensitive cones in the retina of the human eye, corresponding roughly to red, green, and blue sensitive detectors.
Most PGA Tour caddies make between $1000 and $1500 per week, but they also make a percentage of what the player wins in the tournaments. This usually equates to 5 percent of any finish outside the top 10. Players breaking into the top 10, but not winning, will share 7 percent of their prize with their caddies.
Using the 2013 PGA Tour Money List, the minimum Tiger Woods' caddie would have received was $427,671. Because Tiger won five times in 2013, it's reasonable to assume the caddie made far more. In all, 33 golfers made more than $2 million in 2013. That means those caddies would receive a minimum of $100,000 in bonuses.