| 词条 | Eidouranion |
| 释义 |
An Eidouranion is a kind of orrery that combined mechanical movement with a method of back projection. Its invention is attributed to Adam Walker who in the 1780s[1] built one measuring 27 feet in diameter. He used it to accompany his lectures on astronomy. It is an ancestor of planetarium projectors. It is known that Adam Walker held lectures featuring the Eidouranium at the Royal Theatre in London in the 1780s[2] and the London Lyceum.[3] The word "eidouranion" derives from the Greek compound "eid + ouranos".[4] The combining elements are "eidos", which means "what is seen, shape, form",[5] and "ouranos", which was the name of the god of the heavens.[6] Thus, the combined form means "shaped like the heavens" or "formed like the heavens". References1. ^{{cite web|title=Glossary of the Magic Lantern Society |url=http://www.magiclantern.org.uk/alphabet/alphabetef.html |deadurl=yes |archiveurl=https://web.archive.org/web/20120213181500/http://www.magiclantern.org.uk/alphabet/alphabetef.html |archivedate=2012-02-13 |df= }} 2. ^{{cite book|last=Lankford|first=John|title=History of astronomy: an encyclopedia|url=https://books.google.com/books?id=berWESi5c5QC&lpg=PA405&dq=Adam%20Walker%20planetarium&pg=PA405#v=onepage&q=Adam%20Walker&f=false|page=405}} 3. ^{{cite book|last=During|first=Simon|title=Modern Enchantments: The Cultural Power of Secular Magic|url=https://books.google.com/books?id=2eEK-55hgKMC&lpg=PA219&dq=Adam%20Walker%20planetarium&pg=PA219#v=onepage&q=Adam%20Walker%20planetarium&f=false|page=219}} 4. ^{{cite book|title=Webster's New International Dictionary|date=1950|publisher=G. & C. Merriam Co|location=The Riverside Press, Cambridge, MA USA|edition=Second}} 5. ^{{cite web|title=eid|url=http://www.cognatarium.com/cognatarium/?K=eid&P=Search+Morphemes|website=The Cognatarium|accessdate=January 28, 2015}} 6. ^{{cite web|title=Uranus|url=http://www.britannica.com/EBchecked/topic/619280/Uranus|website=Encyclopædia Britannica|accessdate=January 28, 2015}} External links
Further reading
1 : Astronomical instruments |
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