Like them, he was interested in understanding the effects of light on colour.

"It must have been some effect of light," said Peggy.

Orlando was definitely feeling the effects of too much bright light.

I like to play with photographic effects of light and shade.

Science has established the beneficial effect of light on mood.

Every day some new beauty, or effect of snow and light, is to be seen.

The varying effects of light and shade at different hours are extremely beautiful.

His subject matter also changing to show the effects of outdoor light.

"The effect of light on the body and the mind is just now being explored."

Said it was something to do with the effect of clear light on the alcohol.