A Watt is a Joule per second. Joules measure energy and Watts measure power, which is the rate of energy used. Therefore, if you use a 60 Watt light bulb for 10 seconds, you consume 600 Joules.
fluorescents are about 5x as efficientso a 12W will give about as much light
no because it would blow up because the socket would draw 13 watt not 9 watt
Light bulb provide electrical light.
A slice of bresd contains 403kj
A fixture is what the light bulb goes into.
60 Watts is the amount of electrical power the bulb uses when it is switched on.
fluorescents are about 5x as efficientso a 12W will give about as much light
yes you can
Yes if it is a 12 volt DC bulb.
Power = Current * Voltage Current = Power / Voltage Current = 60 W / 120 V Curretn = 0.5 A
Under the right circumstances, yes. So will, for example, a 15 watt soldering iron. It just won't melt very much. It is not the wattage that determines the temperature, it is the insulation (or lack thereof) around the bulb and chocolate that determine it.
Energy.
Yes, if your battery has the capacity to match the light bulbs requirements. A 1.5volt "AA" battery cannot supply enough power to light a 60watt bulb. A flashlight that uses a single battery will have a bulb small enough to be powered by a small battery and a paper-clip as a conductor. A low voltage LED may also be used. Touch one end of the battery to one terminal on the bulb, and connect the other end of the battery to the other terminal using the clip. (you may find it helpful to use tape to hold it all together)
So to replace a traditional 60-watt bulb, buy a 15-watt CFL: 60-watt incandescent / 4 = 15 watts. Note: Some brands of 60-watt equivalent CFLs still do not seem to give off as much light as a 60watt incandescent bulb.
"60 watts" means "60 joules every second". That's what a '60 watt' bulb is designed to consume. If you put 100 joules of energy into a light bulb, 100 joules of energy are going to come out of it, one way or another. Either that energy will be converted into light and heat by the bulb's filament, or else it won't get consumed at all, and it'll come out the other side of the bulb and still be available for use in some other device. So, comparing output energy to input energy is not an effective way to evaluate the efficiency of a light bulb. What you need to do, in order to compare the economy and effectiveness of light bulbs, is to compare LIGHT output to input ENERGY.
Jouls.
about 500