Aurora Borealis
What you call person who fixes light
Light.
Light travels in straight lines that we call rays.
parola light
a head light
Scientists call it refraction.
We call it 'wingardiem leviosa'
I call that "absorption".
The particles of light are known as photons.
It is called "the Light."
Light in Sanskrit is called "प्रकाश" (prakāśa).
That is called a light-year.