Uploaded September 2020 | Updated September 2026, 2 hours ago

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This tunnel is at the top of mount Pilatus out side of Lucerne Switzerland

Alpine Horns:
youtu.be/pDeHZ6kb1lg

Superfluid Helium Resonance Experiment video:
youtu.be/unUNQNmuvUQ

Quantum Field Theory Lecture Series:
youtube.com/playlist?list=PLSpklniGdSfSsk7BSZjONcfhRGKNa2uou