Light source, that is what direction the light is facing, also take care with shadowing. Just copy down into the sketch book you have at hand as accurately as possible.

Artificial light is produced by means of electricity.

The comet leaves a trail of light behind it as it moves.

It is because light travels faster than sound that we see lightning before we hear thunder.

The eye is sensitive to light.

My eyes are very sensitive to the light.

Too many trees deprive a house of light.

She turned off the lights so she could enjoy the moonlight.

Her letter cast a new light on the matter.

He calculated the speed of light.

He himself was not the light.

He was dazzled by the bright light.

There was not a ray of hope before him.

His face radiated enthusiasm.

I saw his face in the dim light.

Cats' eyes are very sensitive to light.

I like reading by daylight.

The light became weaker and weaker.

The sudden glare impinged painfully on his eyes.

All of a sudden, the lights went on.