@jak@Loksel Page 3 is the inside cover. So the thing you see if you take the cover off of the volume. It's supposed to be kind of a slight teaser and this is why we thought we would put it here since this is also where you would see it if you read the volume.
Oh wow. That colored page is ugly, thanks to author not knowing how shading works.
I hate schools. They should be teaching things like that as well on physics lessons.