T here is now a meter for measuring the intensity of ultraviolet rays. Its inventor, Dr. Harvey Clayton Rentschler (Ph. D.) director of lamp research for the Westinghouse Lamp Co., exhibited it ...

The UV index measures the intensity of ultraviolet radiation from the sun on a scale of 0 to 11. The higher the number, the ...

The ultraviolet index measures the intensity of the sun's harmful rays. Learning how to read it can help you protect your ...

UV intensity is higher in May than in August, leading to a high incidence of sunburn in the Spring. ... Meters are available to measure UVB intensity and the scales may range from 0-15.

Both UVA and UVB rays can damage your skin, just in different ways. One causes premature aging, the other is more prone to causing sunburn, DNA damage, and skin cancer.

At the same UV light intensity it takes to kill 99.9% of SARS-CoV-2 in 20 seconds, a person could be safely exposed to 222-nanometer light for up to one hour and 20 minutes.

The UK's first public UV sun meter is unveiled in memory of a BBC Radio Derby presenter who died from skin cancer last year.

Ultraviolet intensity varies during the day. Season of year, time of day, cloud cover and air pollution all affect sunburn times. Sunlight intensity peaks on about June 21.