Changes

==History==

==History==

Polhemus was started as Polhemus Associates by [[William Polhemus]] in the year +1964.<ref name="b232">{{cite web | last=Carlson | first=Wayne E. | title=17.4 Interaction | publisher=The Ohio State University | date=2017-06-20 | url=https://ohiostate.pressbooks.pub/graphicshistory/chapter/1-4-interaction/ | access-date=2024-05-25}}</ref> It was founded in Michigan. Polhemus Associates researched how to track objects' position and orientation in a three-dimensional space.<ref name="b232"/>

Polhemus was started as Polhemus Associates by [[Bill Polhemus]].<ref name="b232">{{cite web | last=Carlson | first=Wayne E. | title=17.4 Interaction | publisher=The Ohio State University | date=2017-06-20 | url=https://ohiostate.pressbooks.pub/graphicshistory/chapter/1-4-interaction/ | access-date=2024-05-25}}</ref> It was founded in Michigan. Polhemus Associates researched how to track objects' position and orientation in a three-dimensional space.<ref name="b232"/>

The company moved to Vermont in the year +1969, and began focusing on hardware. In the year +1970, Polhemus worked with Northrop Corporation, and then changed their name to Polhemus Navigation Sciences, and became incorporated in Vermont.<ref name="b232"/><ref name="o066">{{cite web | title=Polhemus | website=About Polhemus | url=https://web.archive.org/web/19970330140351if_/http://www.polhemus.com/aboutpol.htm | access-date=2024-05-25}}</ref><ref name="a727">{{cite web | last=Cruz-Neira | first=Carolina | last2=Sandin | first2=Dan | last3=DeFanti | first3=Tom | last4=Other | first4=Along With | title=Section 17: Virtual Reality | website=Wayback Machine | url=https://web.archive.org/web/20120213214810if_/http://excelsior.biosci.ohio-state.edu/~carlson/history/lesson17.html | access-date=2024-05-25}}</ref>

The company moved to Vermont, and began focusing on hardware. It worked with Northrop Corporation, and then changed its name to Polhemus Navigation Sciences, and became incorporated in Vermont.<ref name="b232"/><ref name="o066">{{cite web | title=Polhemus | website=About Polhemus | url=https://web.archive.org/web/19970330140351if_/http://www.polhemus.com/aboutpol.htm | access-date=2024-05-25}}</ref><ref name="a727">{{cite web | last=Cruz-Neira | first=Carolina | last2=Sandin | first2=Dan | last3=DeFanti | first3=Tom | last4=Other | first4=Along With | title=Section 17: Virtual Reality | website=Wayback Machine | url=https://web.archive.org/web/20120213214810if_/http://excelsior.biosci.ohio-state.edu/~carlson/history/lesson17.html | access-date=2024-05-25}}</ref>

Polhemus developed magnetic tracking for tracking a pilot's helmet for use with a head-up display. Polhemus received Air Force contracts in the early 1970s.<ref name="b232"/> It faced financial difficulty by late 1973, and the company was sold to the [[Austin Company]], which was a conglomerate based in Cleveland, Ohio.<ref name="b232"/>

Polhemus developed magnetic tracking for tracking a pilot's helmet for use with a head-up display. Polhemus received Air Force contracts.<ref name="b232"/> Polhemus faced financial difficulty, and was sold to the [[Austin Company]], a company in Cleveland, Ohio.<ref name="b232"/>

The company was then sold to McDonnell Douglas. It was called the Polhemus Navigation Sciences division of McDonnell Douglas.<ref>https://dl.acm.org/doi/10.1145/167962.165918</ref>

The company was then sold to McDonnell Douglas. It was called the Polhemus Navigation Sciences division of McDonnell Douglas.<ref>https://dl.acm.org/doi/10.1145/167962.165918</ref>

Two employees left in the year +1986 and founded [[Ascension]].<ref name="b232"/>

Two employees left and founded [[Ascension]].<ref name="b232"/>

Polhemus was sold to [[Kaiser Aerospace and Electronics]] in the year +1988.<ref name="b232"/>

Polhemus was sold to [[Kaiser Aerospace and Electronics]].<ref name="b232"/>

In 1996 and 1997, Philip G. Cooper was the President of Polhemus.<ref name="o066"/><ref name="n232">{{cite web | title=Press Release: 1996-08-05: Sega Selects Polhemus to Develop Next Generation Motion Capture System | website=Sega Retro | date=2019-07-20 | url=https://segaretro.org/Press_Release:_1996-08-05:_Sega_Selects_Polhemus_to_Develop_Next_Generation_Motion_Capture_System | access-date=2024-05-25}}</ref><ref name="i569">{{cite web | title=Polhemus Press Releases | website=polhemus.com | date=1997-05-22 | url=http://www.polhemus.com/pressrel.htm#sega96 | archive-url=https://web.archive.org/web/19970330140730/http://www.polhemus.com/pressrel.htm#sega96 | archive-date=1997-03-30 | url-status=dead | access-date=2024-05-25}}</ref>

Philip G. Cooper was the President of Polhemus.<ref name="o066"/><ref name="n232">{{cite web | title=Press Release: 1996-08-05: Sega Selects Polhemus to Develop Next Generation Motion Capture System | website=Sega Retro | date=2019-07-20 | url=https://segaretro.org/Press_Release:_1996-08-05:_Sega_Selects_Polhemus_to_Develop_Next_Generation_Motion_Capture_System | access-date=2024-05-25}}</ref><ref name="i569">{{cite web | title=Polhemus Press Releases | website=polhemus.com | date=1997-05-22 | url=http://www.polhemus.com/pressrel.htm#sega96 | archive-url=https://web.archive.org/web/19970330140730/http://www.polhemus.com/pressrel.htm#sega96 | archive-date=1997-03-30 | url-status=dead | access-date=2024-05-25}}</ref>

In 1996, Polhemus was a subsidiary of [[Kaiser Aerospace and Electronics]].<ref name="n232"/>

Polhemus was a subsidiary of [[Kaiser Aerospace and Electronics]].<ref name="n232"/>

 

Polhemus's corporate name is Alken, Inc.<ref name="x953">{{cite web | title=Corporations Division | website=Corporations Division | url=https://bizfilings.vermont.gov/online/BusinessInquire/TradeNameInformation?businessID=251741 | access-date=2024-05-25}}</ref><ref name="q030">{{cite web | title=Patriot User Manual November 2004 | url=http://www.math.uaa.alaska.edu/~moose/mhs/trunk/PolhemusActiveXControl/polhemus/Patriot/PATRIOT%20Manual.pdf | access-date=2024-05-25}}</ref> Alken, Inc. was incorporated in Vermont in the year +2002.<ref name="v141">{{cite web | title=Corporations Division | website=Corporations Division | url=https://bizfilings.vermont.gov/online/BusinessInquire/BusinessInformation?businessID=123354 | access-date=2024-05-25}}</ref>

==Patents==

==Patents==