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: Notice that Bravus has remained silent. No response to my solution of the problem. Of course, we know the reason. My stated solution is correct. I have studied optics, ground mirrors, assembled and used telescopes, so am a bit familiar with the field. I think you're over-interpreting forum silence again, mate - there's this thing called 'sleeping' that I like to do from time to time. 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 Oi, mr freikorps, fry me an egg, it's breakfast time! Quote Truth is important Link to comment Share on other sites More sharing options...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 Oi, mr freikorps, fry me an egg, it's breakfast time! On watch right now, mate. Wilco when able. BTW how would one get a fried egg from Calif. to Bravus in Oz? Quote Link to comment Share on other sites More sharing options...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 there's this thing called 'sleeping' that I like to do from time to time. But of course! And now that you have woken up--still gotta have breakfast, eh?--I trust you will recognize that the laws of physics indeed support my solution. After all, I would expect nothing else from someone as accomplished as Bravus. Quote Link to comment Share on other sites More sharing options...
D. Allan Posted February 8, 2008 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. i just tried that with my dresser mirror and backed into the bed... and then on the other side of the bed the wall was in my way, but i saw enough to satisfy me that 1. as the observer moves away from the mirror the field of view in the mirror shrinks, while the field of view outside the mirror grows. 2. as the observer moves toward the mirror the field of view in the mirror grows larger, while the field of view outside the mirror shrinks. so there seem to be a principle of complementarity at work here between the view inside the mirror, and the view outside the mirror. what one lacks the other provides, thus if one could fashion a mirror infinitely small one could see everything with out the need for telescopes!!! shall i write a paper on it? Quote dAb O frabjous day! Callooh! Callay! Link to comment Share on other sites More sharing options...
D. Allan Posted February 8, 2008 Share Posted February 8, 2008 maybe i was hasty in my conclusions, in my analyses of the experimental data. perhaps the correct result is that with an infinitely small mirror one'a field of vision would expand to such a degree that one could see behind his/her head. 360 degreee vision!!! wouldn't that make mirrors unnecessary? i need some help!! Quote dAb O frabjous day! Callooh! Callay! Link to comment Share on other sites More sharing options...
Planey Posted February 8, 2008 Share Posted February 8, 2008 Another question - why does a mirror reverse the image horizontally (ie left and right interchange) but not vertically? Graeme Quote Graeme____________________________________________________________________________________________________________ Link to comment Share on other sites More sharing options...
Amelia Posted February 8, 2008 Share Posted February 8, 2008 I thought our eyes flipped everything we see? 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...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 Yes, Amelia, the lens in the eye focuses light, and the image on the retina, being BEHIND the focal point, is indeed reversed, just as with any telescope. Also, looking at an object in a mirror reverses it horizontally. Quote Link to comment Share on other sites More sharing options...
Amelia Posted February 8, 2008 Share Posted February 8, 2008 So everything is really upside down and hindside! 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...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 maybe i was hasty in my conclusions, in my analyses of the experimental data. perhaps the correct result is that with an infinitely small mirror one'a field of vision would expand to such a degree that one could see behind his/her head. 360 degreee vision!!! wouldn't that make mirrors unnecessary?i need some help!! Monsieur d'Allan, permit me to say that your attempted application of special relativity to the behavior of visible radiation and the properties of mirrors, is indeed creative. However, I would simply suggest that the laws of physics, as well as the experimental data, do not support the concept. Cheers Quote Link to comment Share on other sites More sharing options...
David Koot Posted February 8, 2008 Share Posted February 8, 2008 So everything is really upside down and hindside! Except that there is some extraordinary mechanism in either the brain or the optical array, which inverts the image so that indeed what appears 'up' is up, and what appears 'right' is right. A marvel of design, indeed. Quote Link to comment Share on other sites More sharing options...
olger Posted February 9, 2008 Share Posted February 9, 2008 Gott segne dich ! Quote "Please don't feed the drama queens.." Link to comment Share on other sites More sharing options...
David Koot Posted February 9, 2008 Share Posted February 9, 2008 Möge Gott Sie segnen! Quote Link to comment Share on other sites More sharing options...
Amelia Posted February 9, 2008 Share Posted February 9, 2008 None of that now! 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...
David Koot Posted February 9, 2008 Share Posted February 9, 2008 Aww but all we were doing was asking God's blessing upon each other! Quote Link to comment Share on other sites More sharing options...
Amelia Posted February 9, 2008 Share Posted February 9, 2008 For all I know of German you could have been spitting at each other. 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...
David Koot Posted February 9, 2008 Share Posted February 9, 2008 Gott behüte! Quote Link to comment Share on other sites More sharing options...
David Koot Posted February 9, 2008 Share Posted February 9, 2008 That just means, 'God forbid!' Quote Link to comment Share on other sites More sharing options...
David Koot Posted February 9, 2008 Share Posted February 9, 2008 1. as the observer moves away from the mirror the field of view in the mirror shrinks, while the field of view outside the mirror grows. 2. as the observer moves toward the mirror the field of view in the mirror grows larger, while the field of view outside the mirror shrinks. As one approaches the mirror, more of the random, extraneous light rays reflecting off objects may be seen because of the wider range of angles of reflectivity. Thus the appearance of wider field of view. It is all 'light and mirrors,' I'm afraid. Cheers Quote Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 9, 2008 Moderators Share Posted February 9, 2008 But see, you're insisting that all the light in the world 'should' be collimated, and then dismissing all the phenomena that don't fit that highly simplified model of the world as 'just artefacts'. Of course, in the real world light comes from everywhere, all the time, that's normal and any useful theory needs to account for that, rather than some highly abstracted world. Remember Mr Procrustes? Quote Truth is important Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 9, 2008 Moderators Share Posted February 9, 2008 And in response to Planey's question, as I understand it the mirror actually *doesn't* left-right invert things either - it's an illusion. What it actually does is keep things in the same direction - i.e. keeps the right side of our face on the right side and the left side on the left. But we're used to the idea that, when things are turned around to face us, their sides reverse. And we assume the mirror is turning things around to face us. (This same explanation works for why the backward writing of 'ECNALUBMA' on one of them things looks right in your rear view mirror, if you think it through.) Quote Truth is important Link to comment Share on other sites More sharing options...
David Koot Posted February 9, 2008 Share Posted February 9, 2008 But see, you're insisting that all the light in the world 'should' be collimated, and then dismissing all the phenomena that don't fit that highly simplified model of the world as 'just artefacts'. Of course, in the real world light comes from everywhere, all the time, that's normal and any useful theory needs to account for that, rather than some highly abstracted world. Quote Link to comment Share on other sites More sharing options...
Moderators Bravus Posted February 9, 2008 Moderators Share Posted February 9, 2008 MMkay, off to jump in the swimming pool with the family now, but there will be diagrams. Oh yes. Quote Truth is important Link to comment Share on other sites More sharing options...
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