科学
977 条发现 · 精选自开放网络的发现，按时间从新到旧。
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Thanksgiving
This year we give thanks for Arrow’s Impossibility Theorem. (We’ve previously given thanks for the Standard Model Lagrangian, Hubble’s Law, the Spin-Statistics Theorem, conservation of momentum, effective field theory, the error bar, gauge symmetry, Landauer’s Principle, the Fourier Transform, Riemannian Geometry, the speed of light, the Jarzynski equality, the moons of Jupiter, space, black hole […] Related Posts: Thanksgiving Thanksgiving Thanksgiving
Cosmic Variance · EN
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Proposed Closure of the Dianoia Institute at Australian Catholic University
Just a few years ago, Australian Catholic University (ACU) established a new Dianoia Institute of Philosophy. They recruited a number of researchers and made something of a splash, leading to a noticeable leap in ACU’s rankings in philosophy — all the way to second among Catholic universities in the English-speaking world, behind only Notre Dame. […] Related Posts: Full disclosure Summer Institute in Philosophy of Cosmology, Santa Cruz The Cosmologist vs. The Cardinal
Cosmic Variance · EN
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Thanksgiving
This year we give thanks for a feature of nature that is frequently misunderstood: quanta. (We’ve previously given thanks for the Standard Model Lagrangian, Hubble’s Law, the Spin-Statistics Theorem, conservation of momentum, effective field theory, the error bar, gauge symmetry, Landauer’s Principle, the Fourier Transform, Riemannian Geometry, the speed of light, the Jarzynski equality, the moons of Jupiter, space, black hole entropy, electromagnetism, and Arrow’s Impossibility Theorem.) Of course quantum mechanics […] Related Posts: Thanksgiving Thanksgiving Thanksgiving
Cosmic Variance · EN
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New Course: The Many Hidden Worlds of Quantum Mechanics
In past years I’ve done several courses for The Great Courses/Wondrium (formerly The Teaching Company): Dark Matter and Dark Energy, Mysteries of Modern Physics:Time, and The Higgs Boson and Beyond. Now I’m happy to announce a new one, The Many Hidden Worlds of Quantum Mechanics. This is a series of 24 half-hour lectures, given by […] Related Posts: New Course: The Higgs Boson and Beyond Mysteries of Time: New Teaching Company Course Prof in a Box
Cosmic Variance · EN
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George B. Field, 1929-2024
George Field, brilliant theoretical astrophysicist and truly great human being, passed away on the morning of July 31. He was my Ph.D. thesis advisor and one of my favorite people in the world. I often tell my own students that the two most important people in your life who you will (consensually) choose are your […] Related Posts: Fred Whipple George Carlin, 1937-2008 Are You a Cognitive Miser?
Cosmic Variance · EN
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Thanksgiving
(Apologies for the ugly blog format. We had a bit of a crash, and are working to get the template back in working order.) This year we give thanks for a crucially important idea that can mean very different things to different people: information. (We’ve previously given thanks for the Standard Model Lagrangian, Hubble’s Law, the Spin-Statistics Theorem, conservation […] Related Posts: Thanksgiving Thanksgiving Thanksgiving
Cosmic Variance · EN
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Book Freak #229: The Social Construction of Reality
How everyday knowledge is built, maintained, and transformed through human interaction
Cool Tools · EN
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Gar’s Tips & Tools – Issue #216
Access to tools, techniques, and shop tales from the diverse worlds of DIY
Cool Tools · EN
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Credit-card-size e-reader / TV ads removal / The Invisible Encyclopedia
Recomendo - issue #538
Cool Tools · EN
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Archaea Survived Enceladus-Like Conditions in Lab
Enceladus’s ocean is extremely alkaline and low on carbon dioxide, but one terrestrial extremophile made it work.
Eos · EN
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The AI Upgrade Helping Perseverance Work Smarter on Mars
The rover’s On Board Planner software uses artificial intelligence to reduce wasted time and energy by making on-the-spot scheduling decisions.
Eos · EN
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NASA’s Ignition Sequence Has Begun
NASA recently announced some changes that appear aligned with Ignition initiatives. Here are few of them.
Eos · EN
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A Decade of Carbon Dioxide Data from Space Gets an Upgrade
An improved record of carbon dioxide levels captured from space sets the stage for deeper understanding of climate change.
Eos · EN
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U.S. River Sediment Transport Is Becoming “Burstier”
The time frame in which U.S. rivers move most of their sediment has compressed significantly, which could have implications for water treatment, aquatic habitats, erosion, and harmful algal blooms.
Eos · EN
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Connecting Radio Wave Disruption to “Hot” Charged Particles from Afar
A tag-team of satellites and ground GNSS receivers track down the source of a radio signal disruption (scintillation) from afar—a “hotspot” of plasma some 60,000 kilometers away.
Eos · EN
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Building the Cities of Tomorrow with Living Materials
Construction materials incorporating bacteria, fungi, or other living organisms could self-heal, clean the air, and create more climate-resilient cities.
Eos · EN
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There Are No Small Parts, Only Small Organisms
Microbes are the (mostly) unseen influencers of Earth science, but researchers are learning more about these wee beasties and better appreciating their growing contribution to the world we live in.
Eos · EN
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SBM And The Battle For Information
Part of the reason for forming SBM in the first place is because my colleagues and I perceived that we were engaged partly in a long struggle for control over information—specifically the quality of health information being pushed to the public, including the media and regulators. We did not anticipate how much this battle would change over the last few decades, and […] The post SBM And The Battle For Information first appeared on Science-Based Medicine .
Science-Based Medicine · EN
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Snake Oil to Compounded Peptides: Why We Ask For Evidence
The USA's path to legalizing peptides risks leaving consumers with unanswered questions about quality, safety and effectiveness. The post Snake Oil to Compounded Peptides: Why We Ask For Evidence first appeared on Science-Based Medicine .
Science-Based Medicine · EN