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Why CFL bulbs are in tubular in shape instead of being as typical bulbs?
Wiki User
∙ 13y ago
CFL tubes work on the principal of fluorescent effects produced by electrons. Electrons emitted from the cathode in CFL tubes are incident on the chemicals pasted on inner walls of the CFL tube and visible light is produced there as a result of fluorescence. Now, since the electron beams travel only in straight lines, the CFL tube has to be linearly straight for optimum incidence of electrons on the walls of CFL device.
Wiki User
∙ 13y ago
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How is the current affected by the number of bulbs?
As the number of bulbs in a series circuit increases, the current decreases. As the number of bulbs in a parallel circuit increases, the current increases.
Why are two bulbs in parallel bright when you build a parallel circuit with two bulbs a one d- cell battery?
Two bulbs in parallel are brighter than the same two bulbs in series, given the same potential voltage, because there is twice the available voltage to each bulb.
Why are two bulbs in series with a D-cell dim?
They Are Dim Because the d-cell being used does not produce enough energy to light them both
Element used in light bulb filament?
That depends on the bulb, and the time frame. The first bulbs had carbon filaments. Certain bulbs used in control devices have iridium filaments. Modern grocery store incandescent bulbs have tungsten filaments.Tungsten, because of its very high melting point.
Why are exit lights burned out?
Generally Exit lights have very little ventilation and the bulbs are continuously heated and burn out faster. Some have vent holes but they want you to replace the bulbs which are costly after a while.
How do you reduce ele bills?
By using less electrical energy. Turn off things that are not being used. Change to electrical devices that use less electricity (LED bulbs instead of incandescent bulbs, etc.)
How long do light bulbs last?
It depends on the design of the bulb. Typical incandescent bulbs last between 750 and 1000 hours of operation.
The light-producing element in a fluorescent bulb is the?
Light in fluorescent bulbs occurs when electricity excites the mercury vapor inside the tubular glass bulb.
Why do many people now use fluorescent light bulbs instead of incandescent light bulbs?
cuzz its better yoo.
What is the typical wattage of tanning bed bulbs?
The typical wattage of a tanning bed bulb is 100W, but you need to check the size of the bed to make sure.
Why is tungsten used instead of nichrome in bulbs?
higher melting temperature
Do light bulb emit UV?
Florescent lams do ... museums use a tubular UV filter over those bulbs to prevent damage to two-dimensional paper ephemera.
What did pioneers do without electricity?
Instead of using light bulbs, they used candles.
How are xenon bulbs different from normal light bulbs?
Xenon bulbs are much brighter than regular light bulbs. They are more expensive that normal light bulbs. this is partly because of the cost of xenon gas, but also because of the heat generated by the bulb that requires them to be housed in quartz instead of glass.
Why where light bulbs invented?
To produce light using electricity instead of using fire.
What is being done about pollution?
Compact fluorescent light bulbs.
Does the shape of a light bulb matter?
It most certainly does. For one, there is the matter of aesthetics. Different shapes are used for different decorative applications. Round ("G" for globular) are often used in light fixtures in baths and dressing rooms as opposed to the most common "PS" or "pear shaped" light bulbs. Some light fixtures and portable lamps will only accept "T" (tubular) light bulbs such as picture and piano lamps. Certain shapes are determined by the electrical characteristics of the light bulb. Fluorescent light bulbs are tubular as a result although the tube may be wrapped or formed into different overall shapes, it is still a tube. Compact fluorescent light bulbs are simply fluorescent tubes that have been folded or wrapped into a compact shape. Light bulbs using reflectors have to be of a certain shape in order to properly reflect light in a certain direction and pattern.
