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title: 'new course : beyond' |
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published: false |
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visible: false |
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--- |
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! *YOUR CHALLENGE* : Your image in a mirror. |
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! |
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!  |
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! |
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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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! |
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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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! |
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! <details markdown=1> |
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! <summary> |
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! I choose. |
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! </summary> |
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! * Is my image simply located in my mind, or has it a location somewhere in space? |
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! * If my image is localized, what is its position? |
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! * If my image has a position, does it have a size? Is she taller or smaller than me? |
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! * If my image has a position, and as it is made of light, can it illuminate a screen? |
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! * 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? |
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! * Can I imagine to see more or less tall an image that has a well-defined size? |
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! |
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! 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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! <details markdown=1> |
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! <summary> |
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! ANSWER |
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! </summary> |
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! To write. |
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! </details> |
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! </summary> |
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!!!! *DIFFICULT POINT* (contribute, or indicate a difficult point of understanding) |
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!!!! |
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!! *BEYOND* (to contribute) |
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!! |
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!! *CULTURAL POINT* (contributor) |
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!! |
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!!! *DO YOU MASTER ?* |
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!!! <details markdown=1> |
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!!! <Summary> |
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!!! Describe the test |
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!!! </summary> |
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!!! The text of the test (and its images, figures, audio, video, etc ...) |
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!!! |
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!!! Question text |
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!!! <details markdown=1> |
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!!! <summary> |
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!!! Answer choice 1 |
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!!! </summary> |
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!!! Text if this answer 1 is chosen |
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!!! </details> |
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!!! <details markdown=1> |
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!!! <summary> |
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!!! Answer choice 2 |
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!!! </summary> |
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!!! Text if this answer 2 is chosen |
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!!! </details> |
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!!! <!--possibility to add answers, questions--> |
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!!! ----- |
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!!! <details markdown=1> |
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!!! <summary> |
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!!! Complete solution. |
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!!! </summary> |
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!!! text of the solution |
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!!! </details> |
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