ultra-violet sensor

Might be used for measuring the variation in UV light during the day or as meter to compare sun creams and sunglasses. UV sensors can be found in ‘wearables’ like smartbands and watches. 

I’ve rated these sensors but your assessment will be different. I give a score, out of five, for the sensor’s intrigue, interest, and learning potential. I also give a score for how often a science department might use it.