![]() This, of course, hinted at another source. But the team was studying a part of the sun that had no visible solar flares occurring at the time. This is significant, because solar flares emit X-rays. To test the theory, the researchers looked at X-ray emissions from the corona and found some that were very energetic. But now, the new data offers some evidence suggesting the theory is correct. Such flares are too small to see with most observational equipment, so the idea has remained just a theory. In this new effort, the researchers used data from the FOXSI-2 sounding rocket (a rocket payload carrying seven telescopes designed to study the sun) to test a theory that suggests heat is injected into the atmosphere by multiple tiny explosions (very small solar flares) on the surface of the sun. The chief problem standing in the way of an answer is the lack of suitable instruments for measuring what occurs on the sun's surface and its atmosphere. One of the interesting problems in space research is explaining why the sun's atmosphere (its corona) is so much hotter than its surface. In their paper published in the journal Nature Astronomy, the researchers describe studying data from the FOXSI-2 sounding rocket and what it revealed. ()-A team of researchers from the U.S., Japan and Switzerland has found possible evidence of a source of energy that could be responsible for heating the sun's corona. The blue box shows the integration time for the FOXSI-2 image in a. The gaps in the FOXSI-2 lightcurve show the intervals for pointing changes. The error bars in the FOXSI-2 lightcurve show 1σ standard deviation statistical errors. The GOES lightcurve is for the full Sun, and the XRT and FOXSI lightcurves are for 12234. b, GOES/XRS (top), Hinode/XRT (middle) and FOXSI-2 (bottom) lightcurves. Active region 12234, shown in the yellow box, exhibited no individual flaring activity during the time interval, and was selected for the analysis. a, HXR (above ~3 keV) emission observed by FOXSI-2 on 11 December 2014, 19:13:47–19:14:25 ut (cyan contours) overlaid on SXR (below ~3 keV) images (see colour scale) of two active regions taken with Hinode/XRT (sensitive to >2 MK). 3DmiliģDmili have more than four thousand designs and models arranged in different categories or interior design, furniture, textures and technology.Image and lightcurves of the HXR and SXR emissions. Ĭ offers 5k+ three-dimensional models, which are available for download in multiple categories and various formats in 3DS, C4D, IBJ, ZTL, etc. Archive 3DĪrchive 3D is another repository that hosts seven thousand 3D designs under many categories like equipment and appliances, furnishing, structure, etc. Ī collects, hosts, and shows over 9k architectural models, which are organized in numerous categories like an armchair, bed, chair, sofa, table, etc. Free3Dįree3D is a repository with more than nine thousand 3D models that are presented under many categories like animals, electronics, plants, sports, vehicles, etc. The site hosts 18k+ models, which are searchable and sortable as well. ![]() TurboSquid offers 3D models in numerous formats such as 3DS, C4D, FBX, OBJ, and more. The models are well-arranged under categories and are easily searchable as well. ![]() CultsĬults hosts 19k+ three-dimensional models. Also, anyone can upload their own 3D models. Autodesk Online GalleryĪutodesk Online Gallery, the platform from Autodesk, hosts around 44k+ models. You can search and download fully-tested objects, which are uploaded by its global community. MyMiniFactory is a curated platform showcasing 45k+ 3D models. Thingiverse, which boasts of being “a universe of things”, features more than 50 thousand three-dimension designs and models arranged in collections. It also supports community-uploaded models. 3DModelsCC0ģDModelsCC0 is a free collection of high-quality 3D models with everything licensed as Public Domain. ģ has a collection of 81k+ models arranged in various categories like appliances, bathroom, decoration, furniture, kitchen, materials, textures, etc. Clara.ioĬlara.io hosts 100k+ of free 3D models in various formats such as Babylon.JS, OBJ, STL, and Three.JS, which work in multiple design applications. CGTraderĬGTrader is another site with more than two million three-dimensional models, which are available in multiple file formats like 3DS, C4D, FBX, MAX, and OBJ. GrabCAD Community Library offers 2.8+ million designs and models including CADs, thanks to its largest community of designers, engineers, and students. You can search and download for free after sign up. Pikbest offers thousands of 3D models that are presented under various categories like decoration, wedding, appliances, bathroom, kitchen, furniture. There was a time when 3D printers were a novelty - but not anymore. 10 Cheap and Affordable 3D Printers to Buy
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