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(optics) angle of reflection
When light hits a mirror, the angle of incidence and the angle of reflection become equal.
(neuroscience) spinal reflex / (informal) reflex (response)
The spinal reflex is a part of our body that reacts automatically.
reflective item, such as the reflectors attached to bicycles
He is wearing a jacket with reflective material for night running.
reflexive
He reflexively dodged the ball.
luminous flux
This room feels bright because it has enough luminous flux.
a female given name
Mitsuko is my best friend.
a male given name
Migihiro is my best friend.
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.
(astronomy) photosphere
The sun's photosphere is very bright and can be seen from Earth.
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