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| title | published | visible |
|---|---|---|
| new course : beyond | false | false |
! YOUR CHALLENGE : Your image in a mirror.
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! We all have the opportunity to look at ourselves in a mirror. We see our own image. But perhaps it is interesting to take the time of interrogative observation, and then to test yourself.
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! Do not look at the answer, take time to think, a few days if necessary. The time to build your mental representation of the phenomenon, to formulate it in words is important, a thousand times more important than the ephemeral instant where you read the fews words of the solution.
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! I choose. !
! * Is my image simply located in my mind, or has it a location somewhere in space? ! * If my image is localized, what is its position? ! * If my image has a position, does it have a size? Is she taller or smaller than me? ! * If my image has a position, and as it is made of light, can it illuminate a screen? ! * If I retreat a little from the mirror, I see my image decreasing slightly. Why? Is the size of my image really smaller? Or does it keep its size and I'm the one who sees it smaller? ! * Can I imagine to see more or less tall an image that has a well-defined size? ! ! These questions that I ask myself about my image, I have to ask them about an real object that I see in front of me. !
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! ANSWER !
! To write. !!!!! DIFFICULT POINT (contribute, or indicate a difficult point of understanding) !!!!
!! BEYOND (to contribute) !!
!! CULTURAL POINT (contributor) !!
!!! DO YOU MASTER ? !!!
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!!! Describe the test !!!
!!! The text of the test (and its images, figures, audio, video, etc ...) !!! !!! Question text !!!
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!!! !!! Answer choice 1 !!!
!!! Text if this answer 1 is chosen !!!
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!!! !!! Answer choice 2 !!!
!!! Text if this answer 2 is chosen !!!
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