There are two types of photoreceptors, the cones and the rods. The cones function in bright light and there are three types that are maximally sensitive to different colours, which allows the ratio of their responses to code colour.
Medioimages/Photodisc/Photodisc/Getty Images. Most PGA Tour caddies make a salary of between $1,000 and $1,500 a week, plus a percentage of the playerâs winnings each week. A common rate is 5 percent for finishes outside the top 10, 7 percent for non-winning top-10 finishes and 10 percent if the golfer wins.
Professional Caddies are salaried at $1,000 per week plus 5% of the tournament purse, 7% of a top 10 and 10% for a victory. This amounts to a heft paycheck. Tony Navarro : $442, 548 (June 2006 to June 2007) Allistair Matheson: $337,888 Damon Green started out as a pro, but became a caddy seeking an increase in pay.