From Wikipedia, the free encyclopedia

Which one can be projected?

Near the top, the article states that "because the rays never really converge, one can project only a virtual image, but not a real image. Note that it cannot be obtained on a screen.

In contrast, a real image is an image in which the outgoing rays from a point on the object pass through a single point. It is easiest to observe real images when projected on an opaque screen".

Am I reading it wrong, or should the sentence in the first paragraph say "one can project only a real image, but not a virtual image"? 80.103.77.221 ( talk) 21:23, 29 March 2014 (UTC) reply

You're right. That part of this entry needs to be fixed. I'll do it. — Preceding unsigned comment added by 69.203.112.118 ( talk) 23:11, 6 April 2014 (UTC) reply

Pretty sure that bottom image is a convex and not concave mirror... — Preceding unsigned comment added by 50.196.135.125 ( talk) 18:47, 1 May 2014 (UTC) reply

Why is virtual object redirected here?

In optics, a virtual image and a virtual object are different. A virtual image is an image composed of diverging light. A virtual object is an object that is composed of converging light. A real object creates diverging light. A real image is created by converging light. Dradamh ( talk) 07:59, 27 September 2016 (UTC) reply

The infinity case

If the object is at the focal point, the 'image' is at infinity: shouldn't that case be covered under the definition of 'virtual image'? Or should there be a third image type - real | virtual | infinity ? -- 195.137.93.171 ( talk) 19:56, 17 April 2017 (UTC) reply

From Wikipedia, the free encyclopedia

Which one can be projected?

Near the top, the article states that "because the rays never really converge, one can project only a virtual image, but not a real image. Note that it cannot be obtained on a screen.

In contrast, a real image is an image in which the outgoing rays from a point on the object pass through a single point. It is easiest to observe real images when projected on an opaque screen".

Am I reading it wrong, or should the sentence in the first paragraph say "one can project only a real image, but not a virtual image"? 80.103.77.221 ( talk) 21:23, 29 March 2014 (UTC) reply

You're right. That part of this entry needs to be fixed. I'll do it. — Preceding unsigned comment added by 69.203.112.118 ( talk) 23:11, 6 April 2014 (UTC) reply

Pretty sure that bottom image is a convex and not concave mirror... — Preceding unsigned comment added by 50.196.135.125 ( talk) 18:47, 1 May 2014 (UTC) reply

Why is virtual object redirected here?

In optics, a virtual image and a virtual object are different. A virtual image is an image composed of diverging light. A virtual object is an object that is composed of converging light. A real object creates diverging light. A real image is created by converging light. Dradamh ( talk) 07:59, 27 September 2016 (UTC) reply

The infinity case

If the object is at the focal point, the 'image' is at infinity: shouldn't that case be covered under the definition of 'virtual image'? Or should there be a third image type - real | virtual | infinity ? -- 195.137.93.171 ( talk) 19:56, 17 April 2017 (UTC) reply


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