<Li> The short story "Tlön, Uqbar, Orbis Tertius" by Jorge Luis Borges begins with the phrase "I owe the discovery of Uqbar to the conjunction of a mirror and an encyclopedia" and contains other references to mirrors . </Li> <Li> "The Trap", a short story by H.P. Lovecraft and Henry S. Whitehead, centers around a mirror . "It was on a certain Thursday morning in December that the whole thing began with that unaccountable motion I thought I saw in my antique Copenhagen mirror . Something, it seemed to me, stirred--something reflected in the glass, though I was alone in my quarters ." </Li> <Li> The magical objects in the Harry Potter series (1997--2011) include the Mirror of Erised and two - way mirrors . </Li> <Li> Under "Appendix: Variant Planes & Cosmologies" of the Dungeons & Dragons Manual Of The Planes (2000), is The Plane of Mirrors (page 204). It describes the Plane of Mirrors as a space existing behind reflective surfaces, and experienced by visitors as a long corridor . The greatest danger to visitors upon entering the plane is the instant creation of a mirror - self with the opposite alignment of the original visitor . </Li>

Which type of mirror causes light to spread out