Commit db2b7c54 authored by Claude Meny's avatar Claude Meny

Update textbook.fr.md

parent a96c060d
Pipeline #12537 canceled with stage
...@@ -82,20 +82,20 @@ Il sait que si il ne comprends pas un mots, il y a des explications de vocabulai ...@@ -82,20 +82,20 @@ Il sait que si il ne comprends pas un mots, il y a des explications de vocabulai
!!!!! !!!!!
!!!!! <details markdown=1> !!!!! <details markdown=1>
!!!!! <summary> !!!!! <summary>
!!!!!! What is the apparent magnification of the cathedral ? !!!!! Voir
!!!!! </summary> !!!!! </summary>
!!!!! * Apparent magnification = angular magnification = magnifying power. !!!!! * une droite :
!!!!! !!!!!
!!!!! * As calculated previously, standing 400 metres from the cathedral, the 90 m heigh !!!!! ![](straight-line_L800.png)
!!!!! cathedral sustends the apparent angles of $`\alpha=arctan\left(\dfrac{90}{400}\right)=0.221\;rad=12.7°`$
!!!!! at your eye.<br>
!!!!! !!!!!
!!!!! ![](graduated-axis_L800.png)<br> !!!!! * un axe :
!!!!! !!!!!
!!!!! ![](axis_L800.png) !!!!! ![](axis_L800.png)
!!!!! !!!!!
!!!!! ![](straight-line_L800.png) !!!!! * un axe gradué :
!!!!! _Cathedral of Orleans (France)_ !!!!!
!!!!! ![](graduated-axis_L800.png)
!!!!!
!!!!! </details> !!!!! </details>
......
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