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Health & Science2h 38m ago
Researchers observed a mobile obstacle in a superfluid of light moving against the flow, a phenomenon termed 'upstream swimming'.
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France, Portugal
Who
Researchers at Sorbonne University, University of Porto, Côte d'Azur University, Paris-Saclay University, Quentin Glorieux, Pierre-Élie Larré
What
Researchers observed a mobile obstacle in a superfluid of light moving against the flow, a phenomenon termed 'upstream swimming'.
When
Fri, 19 Jun 2026 17:20:01 GMT · 2h 38m ago
Where
France, Portugal ·
Why
The observation occurred during experiments investigating superfluidity in light, with the upstream movement attributed to vorticity windings in the wake creating local density gradients.
The Frontline Impact
How this affects you
This discovery advances the understanding of quantum fluids and could enable the development of light-driven optical devices capable of self-navigation in nonlinear optical fields.
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