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 $ 150000 to $ 550000 the average salaries have spiked considerably since 1983 when nba officials made between $ 18146 and $ 78259 each season entry level referees entry level referees in the nba earn $ 150000 per year according to information released by the league