Sweet Search Lasers etch a 'perfect' solar energy absorber The University of Rochester research lab that recently used lasers to create unsinkable metallic structures has now demonstrated how the same technology could be used to create highly efficient solar power generators. In a paper in Light: Science & Applications, the lab of Chunlei Guo, professor of optics also affiliated with Physics and the Material Sciences Program, describes using powerful femto-second laser pulses to etch metal surfaces with nanoscale structures that selectively absorb light only at the solar wavelengths, but not elsewhere. A regular metal surface is shiny and highly reflective. Years ago, the Guo lab developed a black metal technology that turned shiny metals pitch black. "But to make a perfect solar absorber," Guo says, "We need more than a black metal and the result is this selective absorber." "This will be useful for any thermal solar energy absorber or harvesting device," particularly in places with abundant sunlight, he adds. More information: Sohail A.
instaGrok | A new way to learn Consensus in Science If it’s consensus, it isn’t science. If it’s science, it isn’t consensus.Michael Crichton I recently read the quote above by Michael Crichton — and it pretty much sums up my opinion of consensus in science. Turns out this quotation is from a speech, which is also cited in the one-page editorial titled “Consensus Science and the Peer Review” by Jorge R. As easy as it would be, and as grave as problems are seen — science must not become instrumentalized by politics, or, even worse, activism. Science is not a cudgel for mission-creep-happy activists. Linked Article: Barrio, J.
Zoo Search - a new, one-stop search engine Consensus Science and the Peer Review Dewey Browse The Secret History of Facial Recognition Glean Comparison Search: An Information Literacy research tool to compare search results for different opinions Why everybody laughs at Williamson, Lynn Margulis’ “best friend” | Earthling Nature by Piter Kehoma Boll Leia em português What would you think if someone came to you and said that your pet snail accidentally got pregnant and you’re the father? Or if you went to the doctor and he said to you “congratulations, you’re pregnant and the father is a sea urchin”. Of course you’d be proud, dontcha? Well, if you think that’s a ridiculous nonsense, you’re quite right. Born in 1922 (he’s 90!) All started, as already mentioned, in 1987, on his paper “Incongruous Larvae and the Origin of some Invertebrate Life-Histories” where he considers the huge differences between adults and larvae in many animals, at first mainly concerning echinoderms. Echinoderms, his first victims, are thought to have hybridized with hemichordates, so explaining why the larvae of both groups are so similar. Here is important to cite a work by Švácha (1992) studying the imaginal disks in larvae of holometabolous insects (those with larva, pupa and adult stages). Turbellarian larvae came from Rotiferans Related
VADLO Science, Pseudoscience, and Irrationalism Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay First-time Visitors: Please visit Site Map and Disclaimer. Use "Back" to return here. What's Here and Not Here, And Why Things on this site generally fit one of the following criteria: They're within my area of technical expertise (earth science, physical sciences, astronomy) They pertain to the general nature of science They pertain to other areas where I have personal experience (military issues) They pertain to topics where blatantly fallacious logic is involved Although there is plenty of pseudoscience related to medical fads, diets, and the paranormal, I don't deal with them much because they are outside my formal training. There are certain things I don't put here because this is a site hosted by a public institution Partisan political positions. Essays that fall into the excluded categories are off-site at "Respect" There is nothing in crank movements worthy of respect.
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