Why cant we obtain a virtual image on a screen?

[Raze2dust]

If we can see a virtual image, why can't we obtain it on a screen?

 

[Doc Al]

Because with a virtual image the light creating the image does not really originate at the apparent location of the image--and you need light in order to focus an image on a screen.

 

[Raze2dust]

but then, isn't the retina of the eye a screen?

 

[Doc Al]

but then, isn't the retina of the eye a screen?

Sure. That's why the eye must focus a real image on the retina.

 

[Raze2dust]

ah ok..so if we keep a lens in the place of the eye then we can obtain it on a screen behind the lens right? i'll just try that out..

thanks to my 8th grader younger bro to ask this question to me, so i now know how little physics i know :D
and of course thanks doc.

 

[Doc Al]

ah ok..so if we keep a lens in the place of the eye then we can obtain it on a screen behind the lens right? i'll just try that out..

Yes, do try it. A magnifying glass should work.