Replace the beam with any object, and you will see that the vertical mirror shows a different aspect than what we can see directly. We are looking at two different sides of the water illuminated by the beam. Just like we would look directly at the face of a person, while the mirror shows us their back, or the top of their head. There are no vertical or horizontal rays, or whatever, in this experiment.
These are wonderful demonstrations you don't often see these days. Thanks fo much for putting them online!!
Who give that a thumbs down! Ha. Fantastic experiment, don’t see this too often anymore. I’m Going to get my 6 year old to watch this.
Excellent
Replace the beam with any object, and you will see that the vertical mirror shows a different aspect than what we can see directly. We are looking at two different sides of the water illuminated by the beam. Just like we would look directly at the face of a person, while the mirror shows us their back, or the top of their head. There are no vertical or horizontal rays, or whatever, in this experiment.