Overhead Projector (OHP) is a variant...

Overhead Projector (OHP) is a variant of slide projector thatis used to display images to an audience.

 

The lamp technologyof an overhead projector is typically very simple compared to a modern LCD or DLP video projector. Most overheads use an extremely high-power halogen lamp thatmay consume up to 750 wattsyet produces a fairly dim, yellowed image.

 

The U.S. Army in 1945 was the first to use OHP in quantity for training as World War II wound down. It began to be widely used in schools and businessesin the late 1950sand early 1960s. — Wikipedia.org

 

197 Likes on Instagram

 

19 Comments on Instagram:

 

luftywiranda13: @mikaelsoedira thank you mas 🙏 🙏 🙏

 

luftywiranda13: @paolo_conti thank you mate, I'm heading to it now

 

luftywiranda13: #twistnshoutprize

 

alfisyahrinur: Haloha adek junior @luftywiranda13

 

alfisyahrinur: Kak sari ni

 

luftywiranda13: @alfisyahrinur hai kak ai ☺☺

 

alfisyahrinur: Halohaa adek :D @luftywiranda13

 

luftywiranda13: #SPRKscholarship

 

 

Done