{"id":7615,"date":"2020-09-27T11:55:16","date_gmt":"2020-09-27T09:55:16","guid":{"rendered":"https:\/\/curiokids.net\/?p=7615"},"modified":"2023-07-06T18:05:06","modified_gmt":"2023-07-06T16:05:06","slug":"do-you-look-sharp-experience-the-sense-of-sight-at-houtopia-a-world-of-senses","status":"publish","type":"post","link":"https:\/\/curiokids.net\/en\/do-you-look-sharp-experience-the-sense-of-sight-at-houtopia-a-world-of-senses\/","title":{"rendered":"Do you look sharp ? Experiment the sense of sight at Houtopia, a world of senses"},"content":{"rendered":"\t\t
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A Houtopia, you'll be bug-eyed<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Do you know the Newton's disc<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Newton’s disk is a disk composed of sectors in the colours of the rainbow. It appears white to us when it spins at full speed. This experiment allows you to understand important principles of sight: retinal persistence and colour fusion.<\/p>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Where are the colours ?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In an attempt to demonstrate that white light<\/span> is a combination of the lights making up the colour spectrum, Isaac\u00a0Newton <\/a>divided a disc into sectors with colours close to the rainbow.<\/p>

As the disc rotates rapidly, the cones of our retina (sensitive to reds, greens and blues respectively) send their signals to the brain very briefly. The brain superimposes them. In this way, the disc appears grey in colour, according to the principle of retinal persistence.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\"DicoKids\"\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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White light<\/h6>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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White light is the addition of all the colours of the rainbow. If you break this light down with a prism, you will find the colours of the rainbow again.<\/p>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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The experiment of coloured light<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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A luminous projection of the 3 primary colours (red, blue, green) on you will allow you to observe the decomposition of light and to become aware of your body by observing the play of shadows that are created. This experience also allows you to compare the luminous primary colours and the material primary colours.<\/p>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Addition or subtraction?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Additive synthesis occurs by superimposing coloured lights. By superimposing two of the primary colours (red-green-blue), we obtain the complementary colours (yellow-cyan-magenta). By superimposing the three primaries, we obtain white light. The complementary colours are lighter and absorb less light, hence the name additive synthesis.<\/p>\n

In painting, or in printing, we speak of subtractive synthesis, which is achieved by mixing coloured pigments rather than light. By mixing two of the primary colours (cyan-yellow-magenta), we obtain the complementary ones (green-red-blue) and by mixing the three primaries, an almost black colour. The complements are darker, they absorb more light, hence the term subtractive synthesis.<\/p>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Illusion of distraction <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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During this experiment, you will watch a video sequence where the objective will be to follow a stone with your eyes, with the underlying question “where is the stone?\u2009\u00bb. At the end of the sequence, you will be asked another question… Have you seen anything else? You will be surprised to find that our sight is limited and you will become aware of your peripheral vision.<\/p>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Have you seen it?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Il peut nous arriver de ne pas remarquer un ph\u00e9nom\u00e8ne visuel pourtant parfaitement pr\u00e9sent. cette incapacit\u00e9 \u00e0 d\u00e9tecter les ph\u00e9nom\u00e8nes se produit g\u00e9n\u00e9ralement quand le stimulus est inattendu, ou parce que trop d\u2019\u00e9l\u00e9ments attirent d\u00e9j\u00e0 notre attention, ou encore quand nous ex\u00e9cutons une action routini\u00e8re.<\/p>\n

Cette c\u00e9cit\u00e9 ou cet aveuglement li\u00e9 \u00e0 notre distraction, est utilis\u00e9e de fa\u00e7on amusante dans les tours de magie pour nous surprendre. Cette absence de visibilit\u00e9 peut aussi avoir de grave cons\u00e9quences. Par exemple, si tu roules \u00e0 v\u00e9lo en lisant tes messages, ou si tu marches en passant une communication t\u00e9l\u00e9phonique, tu es moins attentif \u00e0 ce qui t’entoure, et les risques d’accidents augmentent.<\/p>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Want to know more ?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Houtopia, Universe of Senses<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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