Seeing the Invisible...
What if you could see the way the wind blows? Or e... ...way the wind blows? Or even the small changes in air movement or temperature in the room you're in? Derek Mulle... ...down to concentrating an image of those invisible movements into a form that becomes visible to the eye. No,...
https://www.neatorama.com/2017/06/17/Seeing-the-Invisible/
