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luminous flux
This room feels bright because it has enough luminous flux.
light pollution
In urban areas, light pollution makes it difficult to see the starry sky.
Same as above.
In urban areas, light pollution obscures the starry sky.
a female given name
Mitsuko is my best friend.
a male given name
Migihiro is my best friend.
optical line
A high-speed optical line is installed in my house.
(astronomy) photosphere
The sun's photosphere is very bright and can be seen from Earth.
(electronics) light level adjustment; dimming
How do I adjust the light level in this room?
(electronics) to adjust light levels; to dim
He adjusted the light levels of the lamp to change the atmosphere of the room.
visible light
Visible light is the range of light visible to the human eye.
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