DCS# 6A20.30 | NWU# | Location: 4 D 4 |
title: Lamp in Socket aka: Ghost bulb illusion |
Description: A light bulb in a socket is placed below an empty socket at the 2f location in front of a parabolic mirror. The image appears in the empty socket. Question? What is the location of the object (light bulb) so that its image is located just above it? |