How to see the invisible | DIY Schlieren Images

The cheapest and easiest way to take schlieren images. Usually, schlieren images use a very expensive parabolic mirror, which I didn't have. So, I will show you how to take schlieren images with only a magnifying glass. Smarter Every Day's channel: https://www.youtube.com/user/destinws2 Veritasium's channel https://www.youtube.com/user/1veritasium Subscribe to make sure you don't miss a video: https://www.youtube.com/channel/UCdY4...