Moderators Bravus Posted February 6, 2008 Moderators Share Posted February 6, 2008 I didn't draw a ray diagram, just winged it, so I wouldn't be at all surprised if I guessed wrong. Lemme see here... (scribbles frantically on scrap paper) I do believe you're right. She will see more of the room but not more of herself. (wanders off to the bathroom for the empirical test) Quote Truth is important Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 6, 2008 Moderators Share Posted February 6, 2008 Just as well I don't claim infallibility, eh? Quote Truth is important Link to comment Share on other sites More sharing options...
Planey Posted February 6, 2008 Share Posted February 6, 2008 Things to consider: Is the floor level? If the floor slopes downwards as Alice steps away from the mirror she would be able to see more and more of her head. And more and more of the lower part of her body until she could see her feet if the floor sloped upwards away from the mirror. Is the mirror flat? If not all sorts of strange things could occur. If the floor was level and the mirror flat then David is correct. But we are not told this (and judging by the strange things that happened to Alice it is most likely that the mirror was not standard) so I go for delta as the answer. Graeme Quote Graeme____________________________________________________________________________________________________________ Link to comment Share on other sites More sharing options...
Neil D Posted February 7, 2008 Author Share Posted February 7, 2008 After considering all the possible answers, I choose one that is not there.....E] Who Cares???? Quote Democracy is a device that ensures we shall be governed no better than we deserve.  George Bernard Shaw  Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 7, 2008 Moderators Share Posted February 7, 2008 that would be epsilon Quote Truth is important Link to comment Share on other sites More sharing options...
Amelia Posted February 7, 2008 Share Posted February 7, 2008 OK, so Alice stands back but doesnt see more of herself just more around her. BUT if she stands closer she also doesnt see more of herself just more of one part of herself. Where is the ideal? Quote <p><span style="color:#0000FF;"><span style="font-weight:bold;"><span style="font-style:italic;">"Do not use harmful words, but only helpful words, the kind that build up and provide what is needed, so that what you say will do good to those who hear you."</span></span> Eph 4:29</span><br><br><img src="http://banners.wunderground.com/weathersticker/gizmotimetemp_both/US/OR/Fairview.gif" alt="Fairview.gif"> Fairview Or</p> Link to comment Share on other sites More sharing options...
Planey Posted February 7, 2008 Share Posted February 7, 2008 1. Use a longer mirror or 2. Use a handheld mirror (which you can move up or down or left or right or tilt) or 3, Get something to stand on to lift your eyes higher in compariso to the bottom (and top) of the mirror. or 4. Grow taller (this seemed to an option in the Lewis Carroll stories) Graeme Quote Graeme____________________________________________________________________________________________________________ Link to comment Share on other sites More sharing options...
Amelia Posted February 7, 2008 Share Posted February 7, 2008 Quote: Grow taller I always wished I could grow taller!! But since we can only see with our eyes and they are at the top of our bodies, we really can't see more of ourselves unless it is only one section at a time. Or, if we had magnificating eyes. teehe Quote <p><span style="color:#0000FF;"><span style="font-weight:bold;"><span style="font-style:italic;">"Do not use harmful words, but only helpful words, the kind that build up and provide what is needed, so that what you say will do good to those who hear you."</span></span> Eph 4:29</span><br><br><img src="http://banners.wunderground.com/weathersticker/gizmotimetemp_both/US/OR/Fairview.gif" alt="Fairview.gif"> Fairview Or</p> Link to comment Share on other sites More sharing options...
Planey Posted February 7, 2008 Share Posted February 7, 2008 Or, if we had magnificating eyes. Actually my wife has those. She keeps telling me I need to lose weight, but it's really her eyes... Graeme Quote Graeme____________________________________________________________________________________________________________ Link to comment Share on other sites More sharing options...
Amelia Posted February 7, 2008 Share Posted February 7, 2008 Quote <p><span style="color:#0000FF;"><span style="font-weight:bold;"><span style="font-style:italic;">"Do not use harmful words, but only helpful words, the kind that build up and provide what is needed, so that what you say will do good to those who hear you."</span></span> Eph 4:29</span><br><br><img src="http://banners.wunderground.com/weathersticker/gizmotimetemp_both/US/OR/Fairview.gif" alt="Fairview.gif"> Fairview Or</p> Link to comment Share on other sites More sharing options...
Neil D Posted February 7, 2008 Author Share Posted February 7, 2008 What I want to know is when David looks in the mirror, and sees the liberal smudge, how that affects his self image.....? Doesn't it sound similar to CVA? When the left brain is affected the result will be right-sided weakness, OPPOSITE result. Well, I hope is not the same with any other things. I guess one could say that this give some validation to a person, of any gender, says that s/he is not complete! Melvin, tell me more about this "mad hatter" comment you made! Puleeeze????? Quote Democracy is a device that ensures we shall be governed no better than we deserve.  George Bernard Shaw  Link to comment Share on other sites More sharing options...
David Koot Posted February 7, 2008 Share Posted February 7, 2008 OK, so Alice stands back but doesnt see more of herself just more around her. (Rolls eyes) No, no, no. It does not matter whether she were standing three feet away from the mirror or three hundred feet away. She would STILL see the identical image reflected in the mirror, because the image would be reflected STRAIGHT BACK. The only way to INCREASE what Alice would see LOOKING IN THE MIRROR would be to have a curved surface on the mirror. Of course, at 300 ft., it is possible that irregularities in the mirror's surface would skew the result. For that matter, Alice could be three light-years away from the mirror, and the image reflected back to her from a flat mirror would be identical. This, of course, applies particularly to collimated light, such as emitted by a laser. In nature, light is not collimated, so random light rays can reach the surface of a flat mirror at varying angles, thus giving the appearance of a wider field of view. Dave Quote Link to comment Share on other sites More sharing options...
David Koot Posted February 7, 2008 Share Posted February 7, 2008 What I want to know is when David looks in the mirror, and sees the liberal smudge, how that affects his self image.....? Quote Link to comment Share on other sites More sharing options...
Amelia Posted February 7, 2008 Share Posted February 7, 2008 Originally Posted By: Amelia OK, so Alice stands back but doesnt see more of herself just more around her. (Rolls eyes) No, no, no. It does not matter whether she were standing three feet away from the mirror or three hundred feet away. She would STILL see the identical image reflected in the mirror, because the image would be reflected STRAIGHT BACK. The only way to INCREASE what Alice would see LOOKING IN THE MIRROR would be to have a curved surface on the mirror. Of course, at 300 ft., it is possible that irregularities in the mirror's surface would skew the result. For that matter, Alice could be three light-years away from the mirror, and the image reflected back to her from a flat mirror would be identical. This, of course, applies particularly to collimated light, such as emitted by a laser. In nature, light is not collimated, so random light rays can reach the surface of a flat mirror at varying angles, thus giving the appearance of a wider field of view. Dave Well duh, I know the image would be identical. The question was would she see more or less of herself. I took that to mean as a whole. And I went with, she was looking in a totally flat mirrior.(with or without minor flaws in the surface) Quote <p><span style="color:#0000FF;"><span style="font-weight:bold;"><span style="font-style:italic;">"Do not use harmful words, but only helpful words, the kind that build up and provide what is needed, so that what you say will do good to those who hear you."</span></span> Eph 4:29</span><br><br><img src="http://banners.wunderground.com/weathersticker/gizmotimetemp_both/US/OR/Fairview.gif" alt="Fairview.gif"> Fairview Or</p> Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 8, 2008 Moderators Share Posted February 8, 2008 Nope, I don't think that's right, David. As she moves further away a wider 'cone' (well, cone-like but with a square or rectangular cross section like the mirror) of light will come in and hit the mirror and be visible to her. I'll try to draw a diagram in a minute. Quote Truth is important Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 8, 2008 Moderators Share Posted February 8, 2008 Test it with a mirror now. You can see more of the room as you move away from the mirror and less as you move closer. Quote Truth is important Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 8, 2008 Moderators Share Posted February 8, 2008 (sorry, no drawing tools on this machine, will have to mess with diagrams later) Quote Truth is important Link to comment Share on other sites More sharing options...
Neil D Posted February 8, 2008 Author Share Posted February 8, 2008 Originally Posted By: Neil D What I want to know is when David looks in the mirror, and sees the liberal smudge, how that affects his self image.....? FYI I am a complex mix of numerous elements, which does not lend itself to such simplistic categorization. [snipped due to the long explanation that covers David's embarrassment of the actual liberal for what he truely is. Quote Democracy is a device that ensures we shall be governed no better than we deserve.  George Bernard Shaw  Link to comment Share on other sites More sharing options...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 Nope, I don't think that's right, David. As she moves further away a wider 'cone' (well, cone-like but with a square or rectangular cross section like the mirror) of light will come in and hit the mirror and be visible to her. I'll try to draw a diagram in a minute. (BIG EYE ROLL) No, no, no, NOT a CONE!!! That ONLY applies where the reflecting surface is curved. As I mentioned earlier, given a collimated light source, the distance is immaterial. However, since in nature, light as typically emitted is NOT collimated, stray, read extraenous rays of light can reach the mirror and be 'bounced' back at various angles. This can give the appearance of a wider field of view. One need not draw a diagram to establish the foregoing. The student need only be somewhat familiar with the principles of optics and the properties of light. Quote Link to comment Share on other sites More sharing options...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 I think that Bravus has shown just how erroneous your thinking is with the Alice and her image thingy... Quote Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 8, 2008 Moderators Share Posted February 8, 2008 Quote: Well, there is only liberal and conservative. Heh, that explains quite a lot about your worldview. (I'm saying this wryly and appreciatively as a friend, not as an attack.) Quote Truth is important Link to comment Share on other sites More sharing options...
Neil D Posted February 8, 2008 Author Share Posted February 8, 2008 Originally Posted By: Neil D I think that Bravus has shown just how erroneous your thinking is with the Alice and her image thingy... Bravus is wrong. Wearing his new 'suit of clothes' (as in the emperor's new suit.) Quote Democracy is a device that ensures we shall be governed no better than we deserve.  George Bernard Shaw  Link to comment Share on other sites More sharing options...
Amelia Posted February 8, 2008 Share Posted February 8, 2008 Oh you guys wear me out. Dave, try not to shout so much, ok? Quote <p><span style="color:#0000FF;"><span style="font-weight:bold;"><span style="font-style:italic;">"Do not use harmful words, but only helpful words, the kind that build up and provide what is needed, so that what you say will do good to those who hear you."</span></span> Eph 4:29</span><br><br><img src="http://banners.wunderground.com/weathersticker/gizmotimetemp_both/US/OR/Fairview.gif" alt="Fairview.gif"> Fairview Or</p> Link to comment Share on other sites More sharing options...
Woody Posted February 8, 2008 Share Posted February 8, 2008 Quote: Dave, try not to shout so much, ok? It doesn't bother me ... Of course I am hard of hearing. Quote May we be one so that the world may be won. Christian from the cradle to the grave I believe in Hematology. Â Link to comment Share on other sites More sharing options...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 Oh you guys wear me out. Quote Link to comment Share on other sites More sharing options...
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