Defying physics: This rare crystal cools itself using pure magnetism

Natural crystals fascinate with their vibrant colors, their nearly flawless appearance and their manifold symmetrical forms. But researchers are interested in them for quite different reasons: among the countless minerals already known, they always discover some materials with unusual magnetic properties. One of these is atacamite, which exhibits magnetocaloric behavior at low temperatures – that…

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Scientists capture real-time birth of ultrafast laser pulses

The Mamyshev oscillator (MO) is a type of fiber laser capable of producing high-energy laser pulses at a tunable repetition rate. It is a mode-locked laser which uses light travelling within a closed-loop cavity to produce laser emission. Harmonic mode-locking (HML) is an advanced form of mode-locking process where multiple laser pulses are produced within…

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No. 17 — Devonte Wyatt

Green Bay Packers defensive tackle Devonte Wyatt is hoping for a big season. Getty Images The Green Bay Packers went 11-6 last season, sweeping the NFC West and the AFC South along the way. Overall, though, no one in the building was happy. The Packers failed to build on their terrific finish to the 2023…

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Quordle hints and answers for Monday, July 7 (game #1260)

Looking for a different day? A new Quordle puzzle appears at midnight each day for your time zone – which means that some people are always playing ‘today’s game’ while others are playing ‘yesterday’s’. If you’re looking for Sunday’s puzzle instead then click here: Quordle hints and answers for Sunday, July 6 (game #1259). Quordle…

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