Regarding to the slide 32 about why objects look smaller as they get further away, here obviously explained it : as v = y/z, with constant y, when z is larger, v is smaller. it means the the image though the pinhole is smaller when the object get further away. The light travels straight.
Regarding to the slide 32 about why objects look smaller as they get further away, here obviously explained it : as v = y/z, with constant y, when z is larger, v is smaller. it means the the image though the pinhole is smaller when the object get further away. The light travels straight.