The sun puts out less energy when its activity is low, but different types of radiation vary to different degrees. (newscientist.com)
It is not uncommon for teachers to mention optical telescopes during physics lessons but references to telescopes that make use of other types of radiation are less common. (scienceinschool.org)
There are several types of radiation emitted from many computers, especially laptops, and they come with different risks. (wellnessmama.com)