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Fundamental Physics

A powerful laser is directed into a jet of gas, forming a bright plasma that generates ultraviolet light. As this light interacts with the remaining gas in the vacuum chamber, it creates a visible white line. This method allows scientists to accurately measure the energy required to excite the thorium-229 nucleus, which is crucial for developing a future nuclear clock.

Nuclear Clocks: The Next Frontier in Ultraprecise Timekeeping

ISIS Neutron & Muon Source at the STFC Rutherford Appleton Laboratory in the UK

Muon Colliders: The Next Frontier in Particle Physics

A laser beam hits thorium nuclei, embedded in a crystal.

Scientists Excite Thorium-229 Nucleus with Laser, Paving the Way for Unprecedented Precision Measurements

Quantum vacuum fluctuations, conceptual illustration.

Exploring vacuum energy

Illustration of spherical explosion

Astrophysicists discover the perfect explosion in space

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