Woraus besteht Licht wirklich?

What is light really made of? This question sounds simple at first – but it leads directly to the deepest concepts of modern physics. In this video from Kosmos Klartext, we explore the question of what a photon actually is. We examine the fundamentals of quantum physics, explain the role of energy and frequency, and show why photons have no internal building blocks. Among other things, we discuss the photoelectric effect, the famous double-slit experiment, the speed of light, and the central idea of ​​modern physics: that particles like photons are not small objects, but rather excitations of quantum fields. This includes the photoelectric effect, the famous double-slit experiment, the speed of light, and the central idea of ​​modern physics: that particles like photons are not small objects, but rather excitations of quantum fields. ... You'll learn: – what a photon really is in quantum physics – why photons have no components – how energy and frequency are related (E = hf) – why light has no rest mass – how light can be both a wave and a particle at the same time – what the electromagnetic field is – how photons are created as excitations of fields – why light always travels at the speed of light – how momentum without mass is possible – what polarization reveals about light – why the vacuum isn't truly empty – and what "fundamental particles" really mean This video is for anyone interested in physics, space, light, and the universe – explained calmly, scientifically sound, and without unnecessary hype. If you enjoy this kind of content, please support the channel with a like and a subscription. 📚 List of sources – Planck, M. (1900): On the Law of Distribution of Energy in the Normal Spectrum – Einstein, A. (1905): On a Heuristic Viewpoint Concerning the Production and Transformation of Light – Millikan, R. (1916): Experimental Confirmation of the Photoelectric Effect – Compton, A. (1923): A Quantum Theory of the Scattering of X-rays by Light Elements – Young, T. (1801): Double-Slit Experiment – Grangier, P., Roger, G., Aspect, A. (1986): Single-Photon Interference Experiments – Dirac, P. A. M. (1927): Quantization of the Electromagnetic Field – Feynman, R.: QED – The Strange Theory of Light and Matter – Weinberg, S.: The Quantum Theory of Fields – Casimir, H. (1948): On the Attraction Between Two Perfectly Conducting Plates – CERN: Standard Model of Particle Physics #photon #quantumphysics #physics #quantummechanics #photons #relativitytheory #quantumfieldtheory #science #cosmos #universe #astrophysics #education #sciencefacts #science #space #universe