What is This?
During one of my lectures, the instructor had included the following at the bottom of her slide keep in mind that my view of this was about a forth this size It appeared to me that the person on the right was drinking a soda and the one on the left was looking through a telescope. I thought the instructor had said something about cell phones and looked at the image again. Yes, I suppose they could be cell phones. It wasn't until I had adjusted the picture that I saw the line between the two props Oh, it's two cans and string communication! That is what I can see here. But I can still see a telescope and a soda bottle.