Let's say your favorite radio station is "at 99. 9 on the fm dial", which means it is broadcast using electromagnetic waves with a frequency of 99. 9 mhz ("mega"hertz, or million hertz). What wavelength do these waves have? do a calculation. The value for the speed of light is provided on the equation lists near the beginning of your workbook.

Which of the following would be considered a nec code violation in regards to the installation of luminaires? a. an outdoor lighting fixture mounted to a tree b. a five-pound, 12-inch diameter light fixture supported by the screw shell of the lampholder c. florescent lay-in fixtures attached to the framing sections of a suspended ceiling with sheet-metal screws d. track lighting over a sink, 2 feet from a bathtub