Compact fluorescent lighting
Changing lightbulbs. photo by Art Oglesby
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The yellowish bulb is an older one. The new ones seem brighter although their wattage is the same. I guess our eyes are more sensitive to bluish light. Some people do not like its "cold" light so I blend my light with a "warm" bulb. To dim the amount of light I can reach up and unscrew bulbs.
fluorescent light will work simply with the EMF of an electric wire it needs no current. The large power companys added the starter and ballest so it would draw power.
Light without current sounds like magic to me. I am not ready to believe this statement. My hero, Tesla, was able to light bulbs without wires but I believe there was still a current involved. The EMF (which I believe is measured in volts) needs to be much higher than the typical 120 volts, though. I think what you call a ballast is really a step up transformer to produce the required thousands of volts needed to push electrons (current or amps) from one end of the tube to the other (or to the earth).
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