It depends on the design of the bulb. Typical incandescent bulbs last between 750 and 1000 hours of operation.
Fluorescent light bulbs are extremely long-lasting. Most are designed to last over 10,000 hours. This comes out to approximately 416 days of continuous 24 hour usage. Even if used only 8 hours/day, the average fluorescent bulb should last over 3 years.
An incandescent light bulb is your common household bulb. It is best identified by the presence of a filament (the thin piece of wire in the center of the glass bulb that glows when turned on.) The incandescent bulb's interior space is a vacuum (all the air is removed) so that the filament doesn't burn up. It produces a warm, slightly gold/yellow light. A "florescent" bulb, on the other hand, has no filament. It works by electrically exiting gas in a long tube creating a cool white light with almost the same color as the sun.
An aspirator bulb is an apparatus used to suck mucus out of a nose. It has a bulb on the end and is composed of a long stem connected to it. The bulb is squeezed and when let go it suctions things out of the nasal cavity.
Generally speaking, heat increases the rate of chemical reactions; in the specific case of light sticks, it means they glow more brightly (and don't last as long).
The mood light will last as long as the bulbs life, which has a lifetime of an average household light bulb. once the bulb burns out, one must replace the bulb with another mood light bulb.
1400 hours
he improved the light bulb when he saw that it did not last long and broke easily
300 hrs
he improved the light bulb when he saw that it did not last long and broke easily
13.5 HRS.
At the time of the light bulb's invention, the term of protection on a patent was 17 years.
A flourescent light bulb lasts between 6000 to 18000 hours.
Exsacly 13.7 hours
13.5 hours
Any where from 3000-6000 hours :)
i year