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Showing posts with the label Describe

Astronomers describe the star birth web of the cosmic Tarantula Nebula

This composite image of the star-forming region of Doradus 30 — also known as the Tarantula Nebula — reveals areas of cold gas that could collapse to form stars. (Image credit: ESO, ALMA (ESO/NAOJ/NRAO)/Wong et al., ESO/M.-R. Cioni/VISTA Magellanic Cloud survey.) The newly released image of 30 Doradus, also known as the Tarantula Nebula, reveals thin, spiderweb-like strands of gas that reveal a dramatic battle between gravity and stellar energy that could give astronomers an idea of ​​how massive stars have shaped this star formation. regions and why they continue to be born in these molecular clouds. This high-resolution image of the Tarantula Nebula, located 170,000 light-years from Earth, consists of data collected by the Atacama Large Millimeter/submillimeter Array (ALMA). Located in the Large Magellanic Cloud, a satellite galaxy of the Milky Way, the Tarantula Nebula is one of the brightest star-forming regions in our galaxy’s backyard. It’s also one of the most active in term

AI Just Found Alternative Physics Independently

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Pick up any physics textbook and you’ll find formula after formula that explains how things sway, fly, turn, and stop. The formula describes actions that we can observe, but behind each can be a series of factors that are not immediately apparent. Now, a new AI program developed by researchers at Columbia University appears to have found its own alternative physics. After being shown videos of physical phenomena on Earth, AI did not rediscover the current variables we used; instead, it actually comes up with a new variable to explain what it sees. To be clear, this does not mean that our current physics is flawed or that there is a more suitable model to explain the world around us. (Einstein’s laws have proven to be very powerful.) But they can only exist because they are built on a pre-existing ‘language’ of theories and principles established by centuries of tradition. Given an alternate timeline where other minds tackle the same problem from a slightly different perspective, wou

Describe the kinetics of DNA hybridization

Nanoscientists and theoretical physicists at EMBL Australia’s Node in Single Molecule Science UNSW Medicine & Health have teamed up to uncover the intricate mechanisms that govern how quickly two matched DNA strands can fully unite – or hybridize – to form double-stranded DNA. Their findings were published in the journal Nucleic Acids Research. A theory was put forward about 50 years ago that hypothesized that how fast a DNA strand hybridizes is determined by the initial contact that leads to further binding of the matching base strand to the DNA strand – called nucleation interactions. Until now, this theory has never been proven due to the many complexities surrounding DNA biology. “There are a large number of pathways by which two completely separate strands can bind to each other. Standing DNA doesn’t come together into a fully hybridized duplex in an instant. At some point, only two or three base pairs will spontaneously combine. This is a nucleation event,” said Associat

Describe the structure and properties of near-infrared reflective pigments

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image: In a new study, researchers from the Nagoya Institute of Technology, Japan used a combination of experimental and theoretical approaches to understand the optical, electronic, and magnetic properties of the complex solids of layered perovskite compounds, providing valuable insights. This approach can be extended to various functionalized crystalline ceramic compounds. see again Credit: Ryohei Oka from Nagoya Institute of Technology, Japan Urban areas without sufficient tree cover are significantly warmer than their surroundings. This “urban heat island” effect results mainly from the absorption of near-infrared radiation (NIR) in sunlight. Therefore, NIR reflective pigments that can reduce such heating effects are highly desirable. In particular, functional inorganic pigments are attractive candidates on this front. In fact, Dr. Ryohei Oka and colleagues from the Nagoya Institute of Technology, Japan, have demonstrated