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“Overhead projectors were introduced into U.S. military training during World War II, and used at schools like the U.S. Military Academy after the war” (Overhead Projectors, 2012). Images where designed on transparent film so it could be projected on a pulled down white screen. Sometimes the teacher would write the notes on transparent film during the class. The makers that was used was a wet erase.
I chose Overhead Projectors because it was popular during my high school years. The teacher did not have to keep rewriting the information for each class. With the information already written down, all the teach had to do was place it on the overhead projector. This slowly replaced the chalkboard. The relevance of the Overhead Projector was to help the teacher to teach without having to repeat writing on the chalkboard and the use of less paper. I believe this tool is emerging because it is part of the SMART interactive boards.
References
Akanegbu, A. (2013, February 28). Vision of Learning: A History of Classroom Projectors. [Photograph]. Retrieved May 23, 2016, from www.edtechmagazine.com/k12/article/2013/02/vision-learnin...
Overhead Projectors. (2012). Retrieved May 23, 2016, from americanhistory.si.edu/mobilizing-minds/overhead-projectors
Taken on a 7D with a projector lens in a home made mount (body cap with a tube glued to it and lined with velvet).
Projection Portraits - Kristin
Images © Jonathan Luke O'Brien Photography / 401.216.5275 / facebook.com/jlophotog / jpics12@gmail.com
October 20, 2010 -- Dirty Projectors perform at Madison Square Garden in New York, New York.
© 2010 Kathryn Yu. All rights reserved.
Kinemacolor projector no. 19, with original colour filter, from Wirral Museum, used for a demonstration of Kinemacolor films at the BFI's J. Paul Getty Conservation Centre, Berkhamsted, 25 February 2008.
See bioscopic.wordpress.com/2008/02/25/colourful-stories-no-7...
Sheraton Cairo hotel and Casino- meeting room facilities:
High Speed Internet Access Available in Meeting/Event Facilities
Projector
Audio Visual Equipment
Dirty Projectors
20 october 2012
AB Brussels
photo: Alex Vanhee
Dirty Projectors are an American rock band, consisting of David Longstreth (vocals, guitar, musical direction; born December 17, 1981), Amber Coffman (vocals, guitar), Haley Dekle (vocals), Nat Baldwin (bass), Olga Bell (vocals, keyboards), and Michael Johnson (drums).