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zdcyclops
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If the moon were a light bulb how many watts would it be.
More than 2.345E watts it may be.But still need to research because moon is non-luminous and glows with help of sunlight.zdcyclops said:If the moon were a light bulb how many watts would it be.
Average lunar albedo is 12%. Solar intensity is about 1050 W/m^2.zdcyclops said:If the moon were a light bulb how many watts would it be.
I arrived at 1,200 TW with your calculation: ##0.12 \cdot \pi \cdot r^2 \cdot 1.05\, kWm^{-2}## with ##r=1,737,000 \,m##.Scott said:Average lunar albedo is 12%. Solar intensity is about 1050 W/m^2.
Lunar diameter is 3474 Km.
So: about 0.12 * 1.05 * pi * 3.474^2 *1,000,000 KW
That's excluding illumination from Earth.
Roughly 4.8 GW
Do you mean the total effective luminous power of the Moon, or do you mean what size lightbulb would be the equivalent of the Moon's illumination through a window in your home at night?zdcyclops said:If the moon were a light bulb how many watts would it be.
Janus said:Going in the opposite direction, The illuminance of a full Moon on a clear night can be 0.3 lux or 0.3 lumen/m2
We are 384,000 km from the Moon, so that's 5.6e17 lumens total spread out over a the surface of a sphere with a radius equal to the Earth-Moon distance.
That makes ##37,300 \,TW## resp. ##7,000 \,TW##. The previous calculation with the albedo gave ##1,200 \,TW##. The gap is closing down. A factor between ##1## and ##30## seems acceptable considering the overall dimensions.Janus said:How much wattage this equates to for a light bulb depends on its efficiency. An incandescent bulb produces about 15 Lumens per watt, but an LED bulb typically produces 80 lumens per watt.
That entirely depends on the size and type of light bulb. A typical 60 watt bulb is ~3 cm in radius, and if perfectly circular have a surface area of 57.8 cm2 or 0.00578 m2zdcyclops said:Thanks for all of the replies. My question was poorly worded I'll try again. If I were on the moon and looked at my feet I would perceive a certain brightness. If i could shrink my self to the size of an ant and stand on a light bulb what wattage would the light need to be to produce the same perceived brightness.
zdcyclops said:Thanks for all of the replies. My question was poorly worded I'll try again. If I were on the moon and looked at my feet I would perceive a certain brightness. If i could shrink my self to the size of an ant and stand on a light bulb what wattage would the light need to be to produce the same perceived brightness.
zdcyclops said:If the moon were a light bulb how many watts would it be.
Ah, thanks for clarifying. We don't discuss or debunk nonsense here at the PF. Thread is done.zdcyclops said:You guys are waaayyy over thinking this. I am asking how bright is the surface of the moon and what size/power/wattage light bulb comes closest to that. I am curious because of all the Apollo hoaxers that use crap about shadows and how the bottoms of the lander is too bright. I want to be able to put it in the simplest terms possible i.e. If the moon were a x what light bulb how bright would the bottom of the lander be? Do you think you would be able to see the stars? And other silly questions.
The moon does not emit any light on its own, as it simply reflects sunlight. Therefore, it does not have a wattage as a light bulb.
No, the moon cannot be accurately compared to a light bulb in terms of wattage because it does not emit light on its own.
The moon appears much brighter in the night sky than a light bulb because it is much closer to Earth and reflects a larger amount of sunlight.
It is impossible to determine the wattage of the moon as a light bulb because it does not emit light on its own.
No, the moon's phases are caused by its position in relation to the sun and have nothing to do with wattage. The moon appears to change in brightness as it orbits the Earth and the angle at which it reflects sunlight changes.