YouTuber The Action Lab always brings us immersing & exciting experiments and it has no secret that we’re big fans. From his videos, where he makes water dance on a flat surface to those, where he makes a laser microscope from a drop of water, YouTuber always messes with physics & engineering to delight and entertain us.
In the latest experiment, he shows us, how to cancel light waves. To do this he has to make an environment where there’s air, water & then air again.
He does this by the use of a soap bubble. As he sheds white light on the soap bubble, we can see that top part is entirely black which means it isn’t reflecting any light. In other words, light waves have been cancelled.
How does this work? Well, YouTuber explains in great detail by using a slinky to describe how waves reflect in hard & soft boundaries. What are these boundaries, and what do they’ve to do with light waves? How do light waves respond to destructive interference? The Action Lab answers & explores all these questions in this video.