Editing Magic lantern (section)

==Royal Polytechnic Institution shows==
When it opened in 1838, The Royal Polytechnic Institution in London became a very popular and influential venue with many kinds of magic lantern shows as an important part of its program. At the main theatre, with 500 seats, lanternists would make good use of a battery of six large lanterns running on tracked tables to project the finely detailed images of extra large slides on the 648 square feet screen. The magic lantern was used to illustrate lectures, concerts, pantomimes and other forms of theatre. Popular magic lantern presentations included Henry Langdon Childe's dissolving views, his chromatrope, phantasmagoria, and mechanical slides.<ref name=Heard2006/><ref>{{cite book|url=https://books.google.com/books?id=chQiAQAAMAAJ&q=childe+polytechnic&pg=PA410|title=The Magazine of Science, and Schools of Art - Vol. IV|year=1843|page=410}}</ref>