Poke Smot
Well-Known Member
Can the light from a candle afect the sleep cycle?
Candle light
- Thread starter Poke Smot
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Hightide805
New Member
the light from a candle flame is one lumen for a 1x1 foot box... so it produces light, but i don't know if it would do much damage.
the moon and the stars are always out for outside plants...
the moon and the stars are always out for outside plants...
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- #3
Poke Smot
Well-Known Member
about how many lumens will the moon give off off if it is a full moon at sea level
Hightide805
New Member
LOL i have no idea
i'll google it haha
i'll google it haha
Hightide805
New Member
Illuminance Example
10-5 lux Light from Sirius, the brightest star in the night sky[2]
10-4 lux Total starlight, overcast sky[2]
0.002 lux Moonless clear night sky with airglow[2]
0.01 lux Quarter moon
0.2 lux Design minimum for emergency lighting (AS2293).
0.27 lux Full moon on a clear night[2][3]
1 lux Full moon overhead at tropical latitudes[4]
3.4 lux Dark limit of civil twilight under a clear sky[5]
50 lux Family living room[6]
80 lux Hallway/toilet[7]
100 lux Very dark overcast day[2]
320 lux Recommended office lighting (Australia)[8]
400 lux Sunrise or sunset on a clear day. Well-lit office area.
500 lux Lighting level for an office according to the European law UNI EN 12464.
1,000 lux Overcast day[2]; typical TV studio lighting
10,000–25,000 lux Full daylight (not direct sun)[2]
32,000–130,000 lux Direct sunlight
Lux versus lumen:
The difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. A flux of 1,000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1,000 lux. However, the same 1,000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux.
Achieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 12,000 lumens. To light a factory floor with dozens of times the area of the kitchen would require dozens of such fixtures. Thus, lighting a larger area to the same level of lux requires a greater number of lumens.
10-5 lux Light from Sirius, the brightest star in the night sky[2]
10-4 lux Total starlight, overcast sky[2]
0.002 lux Moonless clear night sky with airglow[2]
0.01 lux Quarter moon
0.2 lux Design minimum for emergency lighting (AS2293).
0.27 lux Full moon on a clear night[2][3]
1 lux Full moon overhead at tropical latitudes[4]
3.4 lux Dark limit of civil twilight under a clear sky[5]
50 lux Family living room[6]
80 lux Hallway/toilet[7]
100 lux Very dark overcast day[2]
320 lux Recommended office lighting (Australia)[8]
400 lux Sunrise or sunset on a clear day. Well-lit office area.
500 lux Lighting level for an office according to the European law UNI EN 12464.
1,000 lux Overcast day[2]; typical TV studio lighting
10,000–25,000 lux Full daylight (not direct sun)[2]
32,000–130,000 lux Direct sunlight
Lux versus lumen:
The difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. A flux of 1,000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1,000 lux. However, the same 1,000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux.
Achieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 12,000 lumens. To light a factory floor with dozens of times the area of the kitchen would require dozens of such fixtures. Thus, lighting a larger area to the same level of lux requires a greater number of lumens.
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- #6
Poke Smot
Well-Known Member
nice post +++REPS
