Radiation on the Cumbrian coast

I made a point to my class last week that people hear the word "radiation" in a negative, pejorative sense. But it just means energy that travels as rays. Normally that will be as waves, specifically electromagnetic rays, but it is also sometimes applied to beams of particles. So there is plenty of radiation in the picture I took at St Bees. The teapots are silver because that is a bad emitter of infra-red heat radiation. Bad emitter means that it does it, albeit slowly. So there is infra-red radiation in this picture. You can see the blue sky so there are photons of visible light. That could be described as radiation. I got a nice tan as well, so there must have been ultra-violet radiation. All in all, this radiation made for a lovely day out!