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| title | published | routable | visible |
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| new course : beyond | true | true | false |
!!!! LESSON UNDER CONSTRUCTION :
!!!! Published but invisible: does not appear in the tree structure of the m3p2.com site. This course is under construction, it is not approved by the pedagogical team at this stage.
!!!! Working document intended only for the pedagogical team.
! 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. !! ANSWER !
! To write. !!!!! DIFFICULT POINT (contribute, or indicate a difficult point of understanding) !!!!
!! BEYOND (to contribute) !!
!! CULTURAL POINT (contributor) !!
!!! DO YOU MASTER ? !!!