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Tesla pins Shanghai fire on single battery module

first_img Preview • 2018 Tesla Model 3 Performance: The future, quicker Enlarge ImageIt’s unclear if Tesla’s OTA update following the investigation was pushed to global Model S and Model X vehicles, or if it was limited to Chinese cars alone. Manuel Carrillo III/Roadshow In April, video surfaced of a Tesla Model S catching fire while parked in Shanghai, China. At the time, Tesla told Reuters it sent a team to investigate the conflagration and determine a cause. Now, a couple months later, Tesla put out a statement — and an update — to close the case of the mysterious blaze.Tesla on Friday posted a statement to its Chinese-language Weibo social media page. According to a translation, Tesla sent an investigative team comprising both Chinese and American technical experts to determine a cause and work with local government departments. The investigation determined that the fire was caused by a single battery module failure at the front of the vehicle. The statement points out that the battery system worked as intended, attempting to contain the fire to its initial location while expelling heat to protect the remainder of the battery pack. Tesla said anyone who had been in the vehicle when the fire started would have had time to leave the vehicle.Tesla said that it also pushed an over-the-air update to Model S and Model X vehicles in order to “protect the vehicle battery and improve battery life,” through updates to the charging and thermal management systems. It’s unclear exactly what has changed, and if this OTA update is limited to Chinese-market vehicles. Tesla did not immediately return a request for clarification on these fronts.All vehicles, electric or otherwise, are more than capable of catching fire. Tesla CEO Elon Musk has, in no veiled terms, been quite adamant that his vehicles are significantly safer from fire than your average gas-powered vehicle. It’s important to note, though, that there are major chemical differences between the two, which is why it wasn’t necessarily the scariest thing when the NTSB reported a Tesla battery catching fire twice after it was involved in a crash. Tesla explicitly recommends monitoring a post-crash battery with a thermal imaging camera to ensure that untouched stocks of lithium aren’t at risk of reigniting a subdued battery fire. Tags Now playing: Watch this: 2019 Tesla Model S Long Range review: Familiar, yet oh so much better Tesla Arcade just made in-car gaming way more fun Comments 2:16 Tesla Model 3: The one you’ve been waiting for Electric Cars Car Industry 2019 Toyota RAV4 review: A lovable SUV, but rough around the edgescenter_img Tesla 45 Photos Share your voice Tesla Model S Long Range takes us back to the future 4 More about 2018 Tesla Model 3 Performance Review • Tesla Model 3 Review: Performance trim Tesla More From Roadshowlast_img read more

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Water ice detected at the surface of a distant stars disk

first_img © 2016 Phys.org Astronomers peer into the ‘amniotic sac’ of a planet-hosting star HD 100546 is a 10 million-year-old star located some 320 light years from the Earth. It is accompanied by a fairly flat circumstellar disk in an advanced evolutionary state residing at a distance of 0.2 to four AU, and again from 13 to a few hundred AU from the star. The Hubble Space Telescope revealed that the disk features some complex spiral patterns. However, the nature and origin of these patterns remains uncertain.The star was observed using NICI on Mar. 31, 2012. This instrument is a coronagraphic camera designed to survey for and image large, extra-solar gaseous planets. It allows astronomers to search for large Jupiter planets around nearby stars by spectrally differencing two images taken in or next to strong, near-infrared methane features found in the atmosphere of large, Jovian-type planets.The scientists extracted the scattered light spectra of different regions of the protoplanetary disk around HD 100546. Scattered light observations complement thermal observations and constrain models based on spectroscopic data. NICI helped them unveil the 3.1 µm absorption feature in the scattered light spectrum of the observed disk. They link this feature with the presence of water ice grains.According to the research team, the shallowness of this ice absorption feature can be explained by the loss of ice grains at the disk surface.”In almost all the regions, relatively shallow three µm absorption feature is present in their spectra likely due to water ice grains, indicating that the water ice grains present in the disk surface,” the paper reads.Previous studies claimed that the water ice grains can be quickly destroyed at the disk surface around stars like HD 100546 due to a strong ultraviolet photodesorption.The discovery made by Honda and colleagues could provide new insights on planet formation theories as water ice is believed to play many important roles in the process of forming planetesimals. For instance, ice enhances the surface density of solid material in the cold outer part of a protoplanetary disk, which promotes the formation of massive cores of gaseous planets.”The ice sublimation/condensation front called snowline is considered to be the boundary of the forming regions of the terrestrial and Jovian planets. Snowline is also suggested as a possible forming site of the planetesimals,” the researchers wrote in the paper.The astronomers noted that in order to comprehensively understand the water ice distribution in the protoplanetary disks, other effects on the depth of water ice absorption should be investigated in future theoretical studies. They suggest that further investigations should focus on the grain size, shape and its structure, as well as ice/rock ratio (abundance), dust settling, turbulent mixing, and so on.”Further observations with better photometric accuracy are strongly desired,” the scientists concluded. Citation: Water ice detected at the surface of a distant star’s disk (2016, April 7) retrieved 18 August 2019 from https://phys.org/news/2016-04-ice-surface-distant-star-disk.html More information: Water ice at the surface of HD 100546 disk, arXiv:1603.09512 [astro-ph.EP] arxiv.org/abs/1603.09512AbstractWe made near infrared multicolor imaging observations of a disk around Herbig Be star HD100546 using Gemini/NICI. K (2.2,μm), H2O ice (3.06,μm), and L'(3.8,μm) disk images were obtained and we found the 3.1,μm absorption feature in the scattered light spectrum, likely due to water ice grains at the disk surface. We compared the observed depth of the ice absorption feature with the disk model based on cite{Oka2012} including water ice photodesorption effect by stellar UV photons. The observed absorption depth can be explained by the both disk models with/without photodesorption effect within the measurement accuracy, but slightly favors the model with photodesorption effects, implying that the UV photons play an important role on the survival/destruction of ice grains at the Herbig Ae/Be disk surface. Further improvement on the accuracy of the observations of the water ice absorption depth is needed to constrain the disk models. Explore further This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. (Phys.org)—A team of Japanese astronomers has recently discovered water ice at the surface of a distant star’s disk. Using the Near-Infrared Coronagraphic Imager (NICI) installed on the Gemini South Telescope in Chile, the researchers, led by Mitsuhiko Honda at the Kurume University School of Medicine’s Department of Physics, found that a circumstellar disk around the star HD 100546 contains water ice grains. The findings are reported in a paper published online on Mar. 31 in the arXiv repository. Positions of the spectra extracted region shown in the L’ image of HD100546 disk. A 0.162′′ square regions were set along the major (SE-NW) and minor (SW-NE) axis of the disk at the position of 0.360′′, 0.522′′, 0.684′′, 0.846′′, and 1.008′′ from the central star. Credit: Honda et al., 2016.last_img read more

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Song of the Cosmos

first_imgAd Reinhardt said it right: “It is more difficult to write or talk about the abstract painting than about any other painting because the content is not in a subject matter or story but in the actual painting activity”. Falling on the same lines, Sangeeta Gupta’s art delves in the translation that takes place from objects to its meanings. She does not perceive the objects as they are but how they act upon her and her responses to them. Her artwork is a grandiose fluidity of abstractions refusing to fall into a set of objective understanding of things. Like Monet, she tries to capture the world but not as it appears in the ordinary sensual manner but as it is understood by her. Also Read – Add new books to your shelfAfter numerous solo shows held all over India, Sangeeta’s collection of paintings will be showcased at Art Konsult, Hauz Khas Village till December 20 from 11 am to 7 pm every day. “The works of Sangeeta Gupta goes beyond the temporal physical space; it’s the retinal sensation of surfaces which comes after intellectual sieving. She doesn’t directly paint what she sees around herself, the forms are not describable”, says Dr Aparna Roy Baliga. It is the genius of her work that tricks the spectators’ mind into a plethora of images and imagination unperturbed by any external objectivity being imposed on the abstract flow of things as they are to its direct sense perceptions. Also Read – Over 2 hours screen time daily will make your kids impulsiveMeticulously she works with the textures derived from various forms of nature. She erases and renders, forms are done and undone on the surface. She connects the objective material world to the non-objective eternity. To her inner self and elsewhere, nature is a phenomenon that creates and destroys time and space without halt. Writing poetry is also her means of knowing nothingness. She recounts how her perceptions sometimes bring about amazing personal revelations. As a painter too she has been composing shades of colours that dissolve nature into forms and formlessness and subsequently enter the region of nothingness. Her first solo exhibition was at the Birla Academy of Art & Culture, Kolkata in 1995. Her 26 solo shows have been held all over India i.e. Delhi, Mumbai, Kolkata, Bangalore, Hyderabad, Lucknow, Chandigarh and abroad at London, Berlin, Munich and Lahore. She has participated in more than 150 group shows in India and abroad; in national exhibitions of Lalit Kala Academy, All India Fine Arts and Craft Society and Sahitya Kala Parishad and in several art camps. Her painting has been selected by Bharat Bhavan Museum, Bhopal for their permanent collection. She is also the recipient of 69th annual award for drawing in 1998 and 77th annual award for painting in 2005 by AIFACS, New Delhi and was also conferred Hindprabha award for Indian Women Achievers by Uttar Pradesh Mahila Manch in 1999, Udbhav Shikhar Samman 2012 by Udbhav for her achievements in the field of art and literature and was awarded “Vishwa Hindi Pracheta Alankaran” in 2013 by Uttar Pradesh Hindi Saahitya Sammelan and Utkarsh Academy.last_img read more

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