<h1>Penumbra - L'ombre à la portée des enfants </h1> <p> <strong>Penumbra</strong> : The exhibition L'ombre à la portée des enfants is a funny way to discover visible phenomena and how <strong>light</strong> and <strong>shadow</strong> work. The exhibition programm includes explanations of <em>light shade, light photon, shadow art</em>. </p> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/index_f.htm" title="exhibition Paris">Exhibition Paris</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/laboratoire.htm" title="light and shadow">Light and shadow</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/mains.htm" title="shadow puppet">Shadow puppet</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/archibald.htm" title="penumbra">Penumbra</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/eclaircie.htm" title="physics light">Physics light</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/cabinet.htm" title="light shade">Light shade</a> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/contraste.htm" title="shadow theater">Shadow theater</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/conte1.htm" title="shadow art">Shadow art</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/diaporama.htm" title="day and night">Day and night</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/cuisine.htm" title="light source">Light source</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/vision.htm" title="colors of the rainbow">Colors of the rainbow</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/contrejour.htm" title="sundial">Sundial</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/couleurs.htm" title="color mixing">Color mixing</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/serre.htm" title="light photon">Light photon</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/nuit.htm" title="day and night">Day and night</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/video.htm" title="solar eclipse">Solar eclipse</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/eclipse.htm" title="solar eclipse">Solar eclipse</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/reflechit.htm" title="moon phase">Moon phase</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/jardin.htm" title="light and shadow">Light and shadow</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/conte2.htm" title="physics light">Physics light</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/conte3.htm" title="penumbra">Penumbra</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/apparait.htm" title="light source">Light source</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/medias/exposition.pdf" title="the exhibition">the exhibition</a><br> <a href="http://www.cite-sciences.com/francais/ala_cite/expositions/ombres_lumieres/pointdoc/" title="Documentation">Documentation</a><br> <a href="http://www.cite-sciences.com/english/ala_cite/expositions/ombres_lumieres/medias/dossier_de_presse.pdf" title="Press">Press</a><br> <p>To create a shadow you need : - a light source - an object placed in the light - a surface on which to see the shadow</p> <p>Move the trolley on the rail to modify the distance between the object and the light and observe how the size of the umbra and of the penumbra change.</p>
