科学与环境

'Terror of kings': Why the 1066 appearance of Halley's Comet terrified the medieval world

来源: Phys.org - latest science and technology news stories · 发布于

'Terror of kings': Why the 1066 appearance of Halley's Comet terrified the medieval world
来源: Phys.org - latest science and technology news stories

A sequence on the Bayeux Tapestry shows King Harold alongside a crowd gazing at the sky, beneath the embroidered caption Isti mirant stella ("those people marvel at the star"). Above Harold sits Halley's Comet, with ghostlike invasion boats in the border below—a Norman framing of

A sequence on the Bayeux Tapestry shows King Harold alongside a crowd gazing at the sky, beneath the embroidered caption Isti mirant stella ("those people marvel at the star"). Above Harold sits Halley's Comet, with ghostlike invasion boats in the border below—a Norman framing of Harold as a doomed usurper whose betrayal invited destruction.

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Soybean waste yields 3D-printable material that could help repair skin
科学与环境

Soybean waste yields 3D-printable material that could help repair skin

Transforming a soybean processing byproduct into a material for skin protection and repair is the prospect outlined by a study that used okara, a residue from the production of tofu and soy-based beverages, to obtain a bioactive, biodegradable, 3D-printable biomaterial.

Phys.org - latest science and technology news stories ·

A hidden rivalry between two quantum states at the heart of superconductors
科学与环境

A hidden rivalry between two quantum states at the heart of superconductors

Transmitting electricity without losing any energy may sound impossible, yet this is precisely the promise of superconductivity. For nearly 40 years, scientists have been working to understand materials that exhibit this remarkable property at relatively high temperatures. Unlock

Phys.org - latest science and technology news stories ·