(long story short) Because just like you, you grow older than eventually die :)
Not necessarily. They can be brighter, or less bright. Both the energy saving light bulbs and the old-fasioned incandescent light bulbs come in different powers.
Fluorescent bulbs generate light by using an ionized gas and electrical discharge, whereas regular light bulbs generate light by using heat within the filament contained in the bulb.
Well i use T.V bulbs Computer and i always sun bbaith in the sun i have a Nintendo Ds what gives away light a glow worm a electric bar fire and i also have a fire what gives away light lightening and expecially the stars.
Heat.
no
because it doesn't let the light glow
It might be the energy saving bulbs.
Incandescent light bulbs do not emit much Ultraviolet light. Strip lights and compact fluorescent low energy light bulbs do. The whiteners added to white fabrics react to UV light and glow due to fluorescence.
yes also in light bulbs and lasers!
Either the filament or a gas inside is heated. Once it gets hot enough, it dissipates some of the energy as heat and light.
When you are wiring two light bulbs in SERIES, you split the voltage to each light bulb in HALF, meaning that it will only glow half the brightness per bulb, but it will only draw the current of one bulb, meaning if the bulbs were connected to a battery, it would last longer to connect them together in series, rather than parallel.
The wiring inside the light bulb is very thin (the filament) and glows when heated. The current through the thin wire heats up the filament wire so that it will glow. See the related link 'How Light Bulbs Work'.
Headlight bulbs, high and low beam, parking light bulbs, signal light bulbs, brake light bulbs, dash light bulbs, interior light bulbs, plate light bulbs, etc.
Since the bulbs are in series, each one will have 40 volts across it instead of the 120 volts it was designed for. The bulbs will glow very dimly or not at all.
There are literally dozens of UV light manufacturers on the internet that make lights that are powered by 12v DC. Just search for "Ultraviolet light, 12v". Many bulbs can be engineered to fit in a dome light of a vehicle.
The filament in the bulb has a high resistance to the flow of electricity. As electricity passes through it, the filament heats up and begins to glow, giving off the visible light you see.
they absorb light from before and then when it is dark they glow the absorbed light