Roses and Violets

“Roses are red and Violets are blue”.

Ever wondered why is red and blue light different? What is the feature of light that makes them look different? 

2 Videos on Converging Lens light ray diagrams

I did 2 videos on the topics on lens as part of a collaboration with a secondary school. Hope it will be useful to the students!

Optics Lesson: How to draw converging lens light ray diagram

Optics Lesson: Not your typical converging lens light ray diagram practice questions