1) The power use of bulbs is specified in units of power, not energy. In other words, watts - which means joules per second.
2) Light-bulbs come in different capacities.
3) It is incorrect to say that the energy (or power) "is in" the light-bulb. The light-bulb simply transforms one type of energy to another, using electrical energy which is NOT stored in the light-bulb.
there are 100 joules in an energy efficient light bulb 75 joules go towards the light and 25 joules go towards the heat
Four Hundred Joules
it depends on the kind of led bulb
Every second a 150 Watt bulb converts 150 Joules from electricity into heat and light. The number of Watts tells you how many Joules pass per second.
100 watts means 100 Joules/Second. So in 24 hours, the bulb would use 24*60*60*100 Joules. so that's 8,640,000 joules
6o Wh = 216000 J
Almost 90 % of electrical energy provided to an incandescent light bulb goes as heat and rest as light. A 100 Watt bulb puts out 100 Joules of heat per second. So - for one minute it would put out 6000 Joules (100 Watts X 60 seconds). 1 BTU (British Thermal Unit) of heat = 1055.056 Joules. So a 100 watt bulb, burning for one minute would put out 5.68 BTUs of heat. ( 6000 Joules / 1055.056 Joules) = 5.68 BTUs. Same bulb burning for one hour would generate 341 BTUs of heat.
40 Joules, I think, as the formula for Watts is Joules/Second = Joules per second 40 Watts should equal 40 Joules per one second...
led bulb lasts for more than 24 hours if they glow continuously but if we use the periodically(from some time to time ) they lasts long for many years
its between 30 lumens per bulb
Watt means joules/second. It refers to the amount of energy a device uses, in this case. Multiply the power (in watts) by the time (in seconds) to get the energy (in joules).
56 kilo joules = 56,000 joules
Given the wavelength of the photons from above, 3000 nm you just calculate how many joules each photon has and divide that into 100 joules per second.
100 joules/second = 100 watts.
1 watt= 1 joules/1 sec60 w = 60joules/minuteor=3600joules/hour
100 watts running for 60 seconds uses 100 x 60 Joules of energy. A Joule is the same as a watt-second.
It's 100 watts times 3600 seconds, that's 360,000 joules of energy. A joule is 1 watt for 1 second.
welll it really depends on the volasity of light energy but from my calculatios it is 900
Yes, absolutely. As long as the LED bulb and incandescent bulb have the same base they will both fit the socket. The LED bulb will also run much cooler than the original incandescent bulb.
LED bulbs com in different powers, so there's no way to tell. At a guess a 10W LED might compare to a 60W incandescent.
An LED has a longer life than an incandescent light bulb.
A petajoule is 1015 joules (Quadrillion joules)
Any replacement bulb, LED or not, can be used, so long as the voltage specs are respected and that the bulb's contacts are of the same type.