The humming you hear is actually the bulb filament vibrating.
What causes a 240 volt outlet to give only 120 volts?
How to Lower Your Electric Bill: Home Appliances and Electrical Consumption. Tracking Down High Energy that leads to Big Electric Bills
Why do I have two black wires on the fixture?
Because your old existing fixture stopped working it seems that there is a problem with the fixture circuit.
How do I change the power supply from a battery to standard indoor electric power cord?
Can I use a higher watt CFL than the fixture recommends?
Which wire is the ground wire?
I have four white wires and four black wires in a fixture box. Is my circuit overloaded?
Why did my electrician get an electrical shock if he turned off all the breakers?
The new electrical code calls for a 4-wire plug for dryers.
Do halogen bulbs smell when they’re about to go out?