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The Swiss Physical Society (SPS) is the national professional association of Physicists coming from teaching, research, development and industry. The diversity of modern research in physics is reflected in ten specific sections.

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International Day of Light 2025 – Events Can Now Be Registered

Events for the International Day of Light can now be registered on the official website.

International Day of Light – 16 May
Image: UNESCO

This year, the focus of the International Day of Light (IDL) is on "Light, Innovation, Society."

The IDL will take place on May 16, 2025. However, events held at other times in 2025 can also be registered.

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