Editing Pacific Science Center (section)

===1970s===
In the mid-1970s, the lower-level math area was dominated by the ''[[Mathematica: A World of Numbers... and Beyond]]'' exhibit, where demonstrators in orange jackets (known as "OJ"s) made [[soap bubble]]s and showed audiences how the stylish new [[Chevrolet Chevette]] was paving the way for the quick adoption of the [[Metric system]]. Upstairs, a giant apparatus known as the "[[bean machine|probability machine]]" would ring an alarm before emptying out a bin of balls. The entire exhibition had been originally designed as an exhibit for the IBM Pavilion at the [[1964-65 New York World's Fair]].<ref>{{cite web |url=http://nywf64.com/ibm06.shtml |title=Pavilions & Attractions - IBM - Page Six |access-date=December 22, 2011 |website=New York World's Fair}}</ref> It was permanently removed around 1980.

An aerospace building contained a full-sized [[lunar module]] mockup from which suited [[astronaut]]s would climb out. The Life Building contained the [[Sea Monster House]], a replica of a [[Indigenous peoples of the Americas|First Nations]] [[longhouse]],<ref>{{cite web |url=http://www.alcheringa-gallery.com/artists.html/v1/view/v2/2/v3/142 |title=Russell Smith, restorationist on the longhouse project at the PSE |access-date=July 17, 2012 |url-status=dead  |archive-url=https://web.archive.org/web/20120318152836/http://www.alcheringa-gallery.com/artists.html/v1/view/v2/2/v3/142 |archive-date=March 18, 2012 |website=Alcheringa Gallery}}</ref> as well as a working hydraulic model<ref>{{cite web |url=http://exhibits.pacsci.org/puget_sound/PSSummary.html |access-date=December 22, 2011 |title=The Puget Sound Model| website=Pacific Science Center |archive-url=https://web.archive.org/web/20150310034800/http://exhibits.pacsci.org/Puget_Sound/PSSummary.html |archive-date=March 10, 2015 |url-status=dead}}</ref> of [[Puget Sound]] and the [[Mount Baker]] volcanic exhibit.

With the physical sciences, the physics [[witch]] on [[Halloween]] would ask "Would you like to boil ''blood'' in a paper cup?" or [[Groucho Marx]] would dump [[liquid nitrogen]] on the ponds after a demo. The presenters in question here were Janie Mann, who did dynamic combustion shows dressed as a witch circa 1977–78, and Dan Cox,<ref>{{cite web|url=http://dlcox.wordpress.com |title=Daniel Cox Homepage |access-date=December 22, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20141026001739/http://dlcox.wordpress.com/ |archive-date=October 26, 2014 }}</ref> who did physics demos as Groucho Marx in the same era. Cox would later go on to become a professor of physics. These staff were part of the "OJ" program (short for "Orange Jacket", the uniform of the time for Science Center tour guides and visitor assistants). The program consisted of 24 work study students, whose leader in the late 1970s and early 1980s, Carl Linde, set a format for the program that would last into the late 1990s. The [[Charles Eames|Eames]] theater was originally created for a special multi-screen [[IBM]] movie for the World Fair. It was later converted into an [[IMAX]] screen in 1979, the first of two IMAX theaters at the center.