Physics experiment for the day from Camille.
Equipment: ordinary (somewhat shiny) kitchen spoon
1. Look at your image in the "bowl" of the spoon. Record what you see.
2. Turn the spoon over and look at your image on the "back" or bottom of the spoon. Record what you see.
Of course! you say. Now you remember basic ray optics* from high school physics, or, these days, you'd probably get it in third grade.
You may also remember that the "upside down" image is called "real," meaning that it can be captured on a screen or a piece of paper, for example; and the "right side up" image is called "virtual," meaning it can be seen with our eyes, but can't be picked up on anything tangible.
I've always taken comfort in the fact that when my world looks upside down, it's real. Everything else is virtual.
*Here's a YouTube refresher – very clearly narrated ray diagramming for a concave mirror.