Où vont les photons quand la lumière s’éteint ?
laetitia damour
2,299 views
Where do photons go when the light goes out?
You flip the switch and the room plunges into darkness. But where do photons go when the light goes out? Do they truly vanish into nothingness?
Quantum physics reveals a reality far more fascinating than our simple visual perception. Total darkness is merely a biological illusion created by our brains; in reality, electromagnetic energy cannot be destroyed. In this video, we explore the spectacular fate of these billions of elementary particles: from their dizzying race at the speed of light to their fatal collision with the walls. Discover how the absorbed light transforms into microscopic heat (phonons), creating invisible infrared radiation that continuously floods your room. Finally, we follow the few particles that escaped through the window on their dizzying journey through the expanding cosmos.
00:00 The Biological Illusion of Darkness
10:56 What is a Photon Really?
16:14 Frequency, Energy, and Colors of Light
22:13 The Mechanisms: How is Light Born?
31:33 The Photons' Final Journey
43:53 Quantum Absorption and Annihilation
56:58 Transformation into Heat and Infrared Radiation
01:05:23 The Cosmic Odyssey to Infinity
If you enjoy exploring the mysteries of the Universe and the secrets of matter, subscribe to the Laetitia Damour channel so you don't miss any of our journeys into the heart of science!
#QuantumPhysics #Science #MysteriesOfTheUniverse #Photons #QuantumMechanics
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1 Comments
Où vont les photons quand la lumière s’éteint ?
laetitia damour
2,299 views
Where do photons go when the light goes out?
You flip the switch and the room plunges into darkness. But where do photons go when the light goes out? Do they truly vanish into nothingness?
Quantum physics reveals a reality far more fascinating than our simple visual perception. Total darkness is merely a biological illusion created by our brains; in reality, electromagnetic energy cannot be destroyed. In this video, we explore the spectacular fate of these billions of elementary particles: from their dizzying race at the speed of light to their fatal collision with the walls. Discover how the absorbed light transforms into microscopic heat (phonons), creating invisible infrared radiation that continuously floods your room. Finally, we follow the few particles that escaped through the window on their dizzying journey through the expanding cosmos.
00:00 The Biological Illusion of Darkness
10:56 What is a Photon Really?
16:14 Frequency, Energy, and Colors of Light
22:13 The Mechanisms: How is Light Born?
31:33 The Photons' Final Journey
43:53 Quantum Absorption and Annihilation
56:58 Transformation into Heat and Infrared Radiation
01:05:23 The Cosmic Odyssey to Infinity
If you enjoy exploring the mysteries of the Universe and the secrets of matter, subscribe to the Laetitia Damour channel so you don't miss any of our journeys into the heart of science!
#QuantumPhysics #Science #MysteriesOfTheUniverse #Photons #QuantumMechanics
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