For a long time, libraries needed to protect the collection from the damaging ultra-violet rays of the sun.

The sunglasses - the same as those routinely offered by eye doctors to patients who have had their eyes dilated - screen out ultra-violet rays.

These preparations absorb or block out the sun's harmful ultra-violet rays.

It acts as a barrier against ultra-violet (UV) rays from the sun.

Blinded, I looked up at the white atomic sun, whose hard ultra-violet rays had been adjusted according to the amount given off by the natural star.

It filters out harmful ultra-violet rays and inhibits mould growth.

Perhaps the worst treatment Graham had to endure was an experiment with ultra-violet rays, carried out at the local hospital.

Industrial chemicals are eating away at the high ozone layer that shields life from the sun's harmful ultra-violet rays.

It's a result of our bodies reacting to the sun's ultra-violet rays.

It's due, I believe, to the ultra-violet rays of the sun in those parts.