wood burning stoves*
The moose likes Meaningless Drivel and the fly likes How does a true mirror work? Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Other » Meaningless Drivel
Bookmark "How does a true mirror work?" Watch "How does a true mirror work?" New topic
Author

How does a true mirror work?

Aakash Goel
Ranch Hand

Joined: May 26, 2008
Posts: 198
According to this page (http://www.truemirror.com/moredata.asp), we should see three reflections, but then how do you get this image:



(taken from http://www.truemirror.com/default.asp)

SCJP 5 95%
SCJP FAQ | SCJP Mock Tests | SCJP Tipline | Generics
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 60822
    
  65

Photoshop.


[Asking smart questions] [Bear's FrontMan] [About Bear] [Books by Bear]
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 60822
    
  65

P.S. Hint: the mirror is not flat on the back of the box. Hint, Hint.
Mike Simmons
Ranch Hand

Joined: Mar 05, 2008
Posts: 3003
    
    9
The reason we don't see two more images is that they're outside the field of view. If the mirrors in the box were bigger, then we would see them. But the places we would see them are outside the box, so we can't.

Alternately, if the cup were moved closer to the box, you'd see all three images. But since the cup is far from the box, the left and right images are far from the center, off to the far left and far right respectively, where they can't be seen.
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14074
    
  16

The website explains it all exactly. Did you not read it at all?


Java Beginners FAQ - JavaRanch SCJP FAQ - The Java Tutorial - Java SE 7 API documentation
Scala Notes - My blog about Scala
Mike Simmons
Ranch Hand

Joined: Mar 05, 2008
Posts: 3003
    
    9
That sounds a little harsh. Which part of the website spelled out the answer to the question Aakash asked about why we don't see three images in that picture? I think the website could have made some aspects much clearer with a few good diagrams. I see no reason to assume Aakash didn't read it at all.

Hm, now I want to get a good corner cube reflector made by these folks, with their near-seamless "invisible" join between the surfaces. (Assuming they haven't just photoshopped it out.) Set it up right, and the image should appear upside-down - and reversed, after three orthogonal reflections. That would be cool.
Aakash Goel
Ranch Hand

Joined: May 26, 2008
Posts: 198
Bear Bibeault wrote:P.S. Hint: the mirror is not flat on the back of the box. Hint, Hint.


What do you mean - "mirror is not flat on the back of the box"? I did not understand.
Aakash Goel
Ranch Hand

Joined: May 26, 2008
Posts: 198
Mike Simmons wrote:The reason we don't see two more images is that they're outside the field of view. If the mirrors in the box were bigger, then we would see them. But the places we would see them are outside the box, so we can't.

Alternately, if the cup were moved closer to the box, you'd see all three images. But since the cup is far from the box, the left and right images are far from the center, off to the far left and far right respectively, where they can't be seen.


Thanks! that makes sense.
 
permaculture playing cards
 
subject: How does a true mirror work?
 
Similar Threads
PA #1.....picture association
New To JavaRanch
Metaphorical Programming
Message to Osama from Boeing
what would boys like to have as a gift......?????