1% off Fresnel Lens

and central length as nobody on ebay seems to tell you the focal length

A: First of all, which strain of projector ?
Still or movie and which format, OHP or LCD ?
The more information you can provide the better answers you'll get.

I scantiness to use it as alternative to magnifying glass.
Well I'm from Karnataka, India. here we don't have wallmart

A: You can buy them at wal-mart, they come in big sheets but you can cut them down to the measurements you need. They should be near the vision-center or in stationary.

I have to do a delineate on a lighthouse called "bodie island lighthouse" and I need help reason for my project I have to know what a fresnel lens is so please help me out and answer this...

A: it increases the brightness of the bearable

I am tiresome to enlarge the image from an LCD projector (can't move the projector back further due to limited space). I have a high resolution fresnel lens that i'm trying to use to wax the image....

A: try turning ur fressy lens the other way general area..doh!

I’m working on ‘solar oven’ that uses a jumbo Fresnel lens as the power plant for heat. The idea is to have a cooking chamber and a heating box on the outside. The Fresnel lens will generate...

A: Penury pictures. A Fresnel Lens DOES NOT generate heat, it collects it from the sun. In 1400 F, what is the F? Light energy flow is mainly measured in Watts/m^2.

How hot do sun rays get when magnified through a 8"x11"fresnel lens?
How firm does it get to the high temperature?

I have a 60 inch Philips TV and I took it separately from to change the CRT coolant. I cant remember if the Fresnel lens comes first or the screen. Right now I have the screen on the outside and...

and i was upright wondering how do i invert the picture so i can see it straight forward... not just desktop and whatnot but evrything so when im watching like a flicks playing a game...if...

A: There should be a placement in the menu of the projector that'll flip the image being output. It'll either be 'Flip image' or 'Ceiling / Floor mount'.

The dimensions do not mater much. As hunger as it is capable of focusing light on a specific point for a science experiment.

A: Lots of places offer them, in a variety of sizes. If you don't care how big it is, most book stores sell small ones (for reading bantam print) and you don't even have to go online.

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I have been looking for a Fresnel lense supplier in Sydney where I can systemization specific lense measurements over the phone and pick them up later..... I don't know what measurements I...