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Hi:<o:p class=""></o:p></p>
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A colleague just sent me this information about <span style="font-size: 11pt;" class="">
the world’s oldest orrery at the Eise Eisinga Planetarium (in The Netherlands) and sent the attached photos of the orrery and the clockwork mechanisms.</span></p>
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<div style="margin: 0cm 0cm 0.0001pt;" class=""><font face="Calibri, sans-serif" class=""><span style="font-size: 14.666666984558105px;" class=""><a href="https://en.wikipedia.org/wiki/Eise_Eisinga_Planetarium" class="">https://en.wikipedia.org/wiki/Eise_Eisinga_Planetarium</a> </span></font></div>
<div style="margin: 0cm 0cm 0.0001pt;" class=""><font face="Calibri, sans-serif" class=""><span style="font-size: 14.666666984558105px;" class=""><a href="http://www.bbc.com/travel/story/20180320-the-worlds-oldest-working-planetarium" class="">http://www.bbc.com/travel/story/20180320-the-worlds-oldest-working-planetarium</a> </span></font></div>
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<div class="">(Googling told me: "The London instrument maker John Rowley (circa 1668-1728) made the first orrery for Charles Boyle around 1713, but planetary models have existed since ancient times.” - from the Whipple Museum of the History of Science, Cambridge.)</div>
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I’d never heard of this amazing huge clockwork “calculating” device, so couldn’t resist passing it on to SIGCIS.</div>
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Cheers</div>
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Brian Randell</div>
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<div class="">School of Computing, Newcastle University, 1 Science Square, Newcastle upon Tyne, NE4 5TG</div>
<div class="">EMAIL = <a href="mailto:Brian.Randell@ncl.ac.uk" class="">Brian.Randell@ncl.ac.uk</a> PHONE = +44 191 208 7923</div>
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</span><span style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: 2; widows: 2;" class="">URL = </span><a href="http://www.ncl.ac.uk/computing/people/profile/brianrandell.html" class="">http://www.ncl.ac.uk/computing/people/profile/brianrandell.html</a></div>
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