UV Flashlight Safety Glasses

[Wingman]

I did a similar experiment earlier this year. It was with a UV flashlight without ZWB2 filter by the way.

UV light and visible range

It is maybe not directly showing students that UV is invisible, but it might be an interesting ‘experiment’ to show them. I used the only UV light that I currently have (Sofirn SP31 UV), which doesn’t have a ZWB2 filter, so there is extra/excess visible blue light, but for this experiment it didn’t really matter. I used a pair of (quality) clear safety glasses, which are rated as UV400 glasses. First I took a photo without the glasses, in which the paper (with highlight marker stripes) light u…

If I remember correctly I even tried a way cheaper generic/‘brandless’ pair of safety glasses, which also seem to work I believe. (Not that the safety glasses I used in those photos was a really expensive one. I think it was something like € 6,-)