If you’re looking for a solid, blue light blocking lens — one that filters out most of the harmful colors on the blue end of the spectrum and 100% of UV rays — look no further than Warby Parker.

Learn about how light is transmitted through different materials and how to create ray diagrams to show light transmission with this guide for KS3 physics students aged 11-14 from BBC Bitesize.

Blue light blocking glasses are growing in popularity, but doctors believe the benefit is minimal if anything. "It is not harmful, so therefore if we have someone who comes to us and says 'hey I'm ...