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Experiment 4: The gas discharge tube. Atoms are excited.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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Prof. Desch explains how the gas discharge tube works.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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A voltage is applied and the gas atoms in the tube light up. The color of the light reveals which gas it is.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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The experiment is recorded by the camera and projected onto the wall.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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Experiment 5: Exploring the shape of an invisible object with scattering experiments.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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Prof. Desch positions a wooden body in the middle of a scattering board.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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Small metal balls hit the wooden body and are scattered in many directions. From the angular distribution of the balls, conclusions can be drawn about the shape of the object.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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Prof. Desch at the scattering board, which is an analogy to scattering experiments in particle physics. Fast, small particles, such as electrons, can be used to explore the shape of an invisible target, e.g. a proton.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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How can even smaller objects, e.g. elementary particles, be made visible?
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024
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Experiment 6: Particle detectors, such as a cloud chamber, make traces of particles visible.
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Prof. Klaus Desch started the "Kinderuni" in Summer Term 2024