It’s great to read an explanation for this. Glassblowers can see iridescence when we blow ‘bubble trash’, which happens when you blow glass so thin it can float

It’s great to read an explanation for this. Glassblowers can see iridescence when we blow ‘bubble trash’, which happens when you blow glass so thin it can float away in the air. If one could get it on thicker bubbles without using chemicals such as tetraisopropyl titanite, that would be fantastic.