" Go get me that projector, please".
You could use welders goggles. Or you could use a projector such as a pin hole projector.
Large projector screens are used in several places today. Movie theaters use projector screens, large conferences use projector screens, and you can even rent or purchase projectors and screens for personal use.
projector have concave or convex
Projector - 2010 Mother's Day 1-14 was released on: USA: 18 June 2011
For work use, the projector has imaging options that keeps things simple so you can focus on what's on the screen. It also has multiple connectivity options and it's low maintenance. The projector needs some accesories like the wireless connection, mouse control, and media card imager. The wireless connection allows the users to take turns projecting data during a meeting. The remote control allows users to change projector settings from their PC.
No, a movie projector uses a convex lens.
to find the degrees of an angle
it is very nice.....
Projector - 2010 The Cold Light of Day 2-14 was released on: USA: 9 April 2012
You will probably spend about seventy dollars on a rental projector. You could buy a projector at best buy for about four hundred and be able to use it all the time if it is not going to be a one time thing. You can rent a LCD projector online by visiting http://www.lcdprojectorrentals.com/. They charge $129 a day.
Yes one to use would be the Hitachi Projector Remote Control