Light reflects in the same manner that any wave would reflect. Light refracts in the same manner that any wave would refract. Light diffracts in the same manner that any wave would diffract. Light undergoes interference in the same manner that any wave would interfere. And light exhibits the Doppler effect just as any wave would exhibit the Doppler effect.
Snooker referees in this industry earned an annual mean wage of $27,050 that year. Those employed in other amusement and recreation industries earned an annual mean wage of $23,640, while those employed by elementary and secondary schools earned an annual wage of $36,320.nnual Wage. The BLS reported the median annual wage for snooker referees and umpires, referees and other sports officials in general was $22,820 in May 2010.
The average salary of an NBA referee is from $150,000 to $550,000. The average salaries have spiked considerably since 1983, when NBA officials made between $18,146 and $78,259 each season.Entry-level referees: Entry-level referees in the NBA earn $150,000 per year, according to information released by the league.However, according to The Sport Economist, the National Basketball Referees Association (NBRA) claimed that number to be somewhat lower â $91,000 â during negotiations in 2009.enior referees: The case of senior referees is somewhat better as they earn as much as $550,000 every year. The NBRA contested this too though, as they argued that these referees earn only $400,000 per year.