Shark Wheel on a roll to reinvent skateboarder experience

first_img Explore further More information: … arding-wheel-that-sh ( —A California-based company has a new kind of wheel for skateboards that delivers a novel shape and claims a special ride experience. This is the Shark Wheel, not circular, not square, but something more interesting. The wheels appear as square when in motion from a side view but the wheel geometry is more than that. The wheels feel circular to the rider, and viewing them along with more details may help to clear the mystique. The wheels are made of three strips each; these create a helical shape when they roll, and they form a sine wave pattern. When the wheels make contact with the ground, good things happen, say the team behind the wheels—the user gets speed, better grip, and a smoother ride. As the wheel inventor, David Patrick tells the story, the wheel began when fashioning a cube made of different parts, and he accidentally dropped the object on to the ground, That is when he got his inspiration to reinvent the wheel. He had figured out how to take six simple shapes and assemble them in such a way to form a cube. When by accident he dropped the cube to the ground it rolled and it kept on going and going no matter what the terrain.He and the team got to work modeling the design, testing the wheel performance in different conditions and with focus groups of experienced riders, and molding a final design in industry-standard urethane. They now want to do a full production run, and for that phase they have launched a Kickstarter campaign. They have surpassed their goal of $10,000, having raised $21,823 at the time of this writing. Estimated delivery of the 70mm skateboard longboard wheel is September 2013. For $55 and up you get four of these wheels and more depending on the size of the pledge. Based on the success and speed of response, it appears that the stated benefits of the Shark Wheel are appealing enough to those who skateboard. For example, less friction points on the ground allow the wheel to roll faster than a traditional skateboard wheel. The sine wave pattern is said to support better lateral grip. The team says the wheels perform well in rain and gravel. The alternating pattern of grooves reduces hydroplaning by channeling liquid, sand or gravel out and away from the surface of the wheel. Rounded edges allow liquid and gravel to pass around the wheel. Another advantage is its self-centering design, where at high speeds the Shark Wheel does not suffer from “Speed Wobble.” Skateboarders are not the only end users that Patrick and his team have in mind. Their first products for sale are for the skateboard industry but they would like to see a day when their wheels enter other markets as well. Citation: Shark Wheel on a roll to reinvent skateboarder experience (2013, June 11) retrieved 18 August 2019 from © 2013 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. Quality control in the manufacturing cyclelast_img read more

Observed cosmic rays may have come from twomillionyearold supernova

first_img Cosmic mystery deepens with discovery of new ultra-high-energy neutrino © 2015 The existence of such a supernova is also intriguing because, in unrelated work, a supernova of the same age and distance has been proposed as the source of rare iron isotopes buried in the Earth’s ocean crusts. The two different sets of data—cosmic rays and iron isotopes—both seem to point to the same exploding star as their source.The scientists, Michael Kachelrieß, et al., have published a paper on the signatures of supernova in cosmic ray spectra in a recent issue of Physical Review Letters.As the researchers explain, it’s difficult to extract information about the sources of cosmic rays from observations. This is partly because the galactic magnetic field that permeates empty space interferes with the cosmic ray trajectories, which makes the cosmic ray energy intensity nearly uniform. In addition, there are likely multiple sources of cosmic rays, and the signals from all of these sources overlap in the cosmic ray spectrum, which makes it difficult to extract signatures of individual sources.Despite these challenges, the researchers explain that the cosmic ray energy spectrum may still have some “memory” of individual sources, which could be encoded in small features. The researchers specifically focused on some of the puzzling features, such as why there are more than expected positrons (antielectrons) above a certain energy level. While these features appear puzzling from the standard perspective of cosmic rays and are often ignored, accounting for them is key for identifying the supernova as a cosmic ray source.”Traditionally in cosmic ray physics, one uses the approximation that the sources of cosmic rays are smoothly distributed in time and space,” Kachelrieß, a physics professor at the Norwegian University of Science and Technology in Trondheim, told “Our paper and the related work show that this approximation should be abandoned. For the understanding of many physical phenomena, it is important to take into account that cosmic rays are accelerated in events which happen only about once per century in our galaxy.”The data also provide a way to constrain the parameters of this source: a source that was older or younger than about two million years, or a source that was nearer or further away than 100 trillion miles, would be inconsistent with the observed spectra. One possibility that the data rules out, for example, is that these high-energy cosmic rays originated from a “superbubble,” which is a region of space that is “blown” by massive star formation and large numbers of supernovae. The only plausible model of the cosmic ray source, according to the data, is an individual supernova.”We are continuing to refine our model for the cosmic ray propagation, extending it, for example, to lower energies,” Kachelrieß said. “This may have also an impact on the predictions of antimatter fluxed from dark matter annihilations or decays. Moreover, we will try with collaborators to calculate the effect of cosmic rays from this local supernova on the Earth’s atmosphere.” Journal information: Physical Review Letters (—High-energy protons, nuclei, and other particles are constantly showering down on Earth’s atmosphere from space, but the origins of these cosmic rays is unknown. One possibility is that the cosmic rays come from supernovae, although the evidence for this claim is limited. Now by analyzing the cosmic ray energy spectrum, scientists have been able to deduce that some high-energy cosmic rays may have originated from a two-million-year-old supernova located roughly 100 trillion miles away. 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.last_img read more

Painting for a cause

first_imgThe alarming rise in the number of rape cases, abuse and trafficking faced by the fairer sex has prompted many individuals and organisations to step up and make an effort to stop these dastardly acts. The Apne Aap Women Worldwide, which works at the grassroots level, is one such initiative taken.And in order to make the world a better place, it is best to start changing mentalities right from the budding stage. So with the intention of changing the thought process of younger generation, the group recently organised a poster making competition in Delhi. Young artists produced some really wonderful and thought-provoking works. Also Read – ‘Playing Jojo was emotionally exhausting’‘The focus is how sensitively these issues can be presented and the competition was an attempt in making young people participate and acknowledge these aspects of our social life,’ said Abhilasha Kumari, director, Apne Aap. ‘The roar may have died down, the issue hasn’t. The response of people, is very reassuring,’ said Manisha Parekh.Apurva Shroff, one of the winners, feels that it is only men who can make women feel safe. Describing her poster, she says: ‘It signifies that we live in a male-dominated society and the cufflinks signify a man’s hand. The different shades of hand — black, grey, white — represent the different type of men around us. It’s high time men should rise against rape because it’s only men who can make women feel secure. My poster says ‘Help her feel safe and rise against rape’’.We agree.last_img read more

Modi visits Australian varsity gets update on agriculture

first_imgIn his first engagement at Brisbane, where he landed earlier in the day on the second leg of his three-nation visit, Modi visited the QUT. There was palpable excitement among the student community, which also includes a large number of those of Indian origin.Modi was asked to write a message on the agricultural robot, and he wrote in Hindi “research is the mother of development”, according to a tweet by the ministry of external affairs spokesperson Syed Akbaruddin. Also Read – Need to understand why law graduate’s natural choice is not legal profession: CJICurious students gathered around the robot to read what the Indian prime minister had written.A translation of the entire message was posted by the university.It read: “Research is key to development. There is ongoing relationship between development journey of humankind and research. Increasing dominance of science and technology in the field of agriculture will surely prove to be beneficial to farmers and to the field of agriculture as a whole. It is an important endeavour for the welfare of mankind. Best wishes for your effort.” Also Read – Health remains key challenge in India’s development: KovindThe Agro Robot is a lightweight machine that performs the functions of a large tractor, including weeding.Modi took a walk around the university to learn more about the agricultural research going on there, including how to enhance the bio-technological processes to fortify bananas with more iron content.The prime minster also wished the children on Children’s Day, celebrated on the birth anniversary of India’s first prime minister Jawaharlal Nehru. “I am fortunate to be among children on Chacha Nehru’s birthday,” an MEA tweet cited Modi as saying.Many researchers of the Indian origin community were seen taking selfies with the prime minister.Modi met researchers, the student community and got an update on projects focused on bio-fuels, bio-fortification and agro-robotics.Modi arrived earlier in the day from Myanmar to attend the G20 summit.He is the first Indian prime minister to visit Australia since Rajiv Gandhi in 1986.Modi was received at the airport by Queensland Premier Campbell Newman.Indian High Commissioner in Australia Biren Nanda was present.In Australia, Modi will attend the G20 summit in Brisbane Nov 15-16 and also hold talks with Australian Prime Minister Tony Abbott in Canberra during his five-day stay here.Among his other engagements here Friday is a reported bilateral meeting scheduled with British Prime Minister David Cameron.last_img read more

Collecting laurels

first_imgThis award was received by Sudhir Sobti, Chief Manager (PR and Publicity) on behalf of Delhi Tourism, from Lalit Panwar, Secretary (Tourism), Ministry of Tourism, in an elaborate and ornamented award ceremony on 25 November, at JW Marriot Hotel, in the Capital.Now thrice in the row, this endowment recognizes the fact that Delhi offers the most comprehensive and satisfactory stay to tourists from around the globe.Delhi is aggressively coming out as a tourist friendly destination, with its increasing cultural hangouts and improved infrastructure. Delhi, a city with numerous heritage delights, is a unique destination for the modern day explorer. Delhi Tourism has been making consistent efforts to make Delhi as one of the most lively cities in the world for tourism. Cultural initiatives taken by Delhi Tourism have persistently been driving local as well as international tourists in the city.Reader’s Travel Awards by Conde Nast Traveller India has been recognizing the best of travel experiences to deliver the most prestigious award in travel industry. The worthy of this accolade is decided by the readers of Conde Nast’s publication, who vote based on their own personal experiences with the contestants.last_img read more

Spiritual connection

first_imgFrom devotional traditions of South India to Meera bhajans and ‘Nirgun’ bhakti songs, the second day of the Bhakti Sangeet festival captivated the audience with its diversity of spiritual and devotional renditions.As the evening opened, Meeta Pandit introduced the Delhi audience to the beautiful devotional traditions of South India; while Iqbal Ahmad Khan’s Meera bhajans reminded the audience of saint Meera’s selfless love and devotion to Lord Krishna.  Also Read – ‘Playing Jojo was emotionally exhausting’Popular singer Shubha Mudgal of Abke Saawan fame ended the mesmerizing evening with chantings of devotion to the ‘Nirgun’ or formless Creator.Delhi’s much-loved annual Bhakti Sangeet festival is presented by Sahitya Kala Parishad and Department of Art, Culture and Languages, Govt of Delhi. This year it has nine individual and group performances of Bhakti and Sufiana renditions over three days at Nehru Park, Chanakyapuri. No matter what language we speak or which culture we adhere to, there are certain elements of human consciousness that transcend all tangible differences. Devotion to the Ultimate Being is one of those universal sentiments that find expressions in multiple forms. Be it in the form of bhajans or qawwalis or Gospel music, devotional music is one form of expression that does not fail to strike the chords of believers. Also Read – Leslie doing new comedy special with Netflix“Every individual soul finds its own way to connect with the eternal reality. Some perceive the Creator as a formless transcendent reality; others conceptualize Him in a human form. In different cultures and languages, people develop and nurture their own devotional traditions. Each region borrows from the saints that roamed in their lands. Music is a form that resonates with people across the world by aligning the mystic frequencies of a mind to verbal expression of love,” said Shubha Mudgal.  The annual Bhakti Sangeet Festival serves the purpose of unifying and bringing together the multiple traditions of Indian devotional music at one stage. From Kabir bhajans, to the distinct bhakti music from South India, to Sufiana kalams from Punjab! The stupendous diversity and variety of multiple traditions of devotional music of India is on full display at the Bhakti Sangeet Festival.Anup Jalota, who performed on the first day of the festival said, “We are a country known globally for its spirituality and we have multifarious ways of professing our love to God. The Bhakti Sangeet festival is a unique platform that brings together people from different genres of music and unites them by their love for the devotional music.” The last day of the festival will see four performances including one by Kabir Café, a band dedicated to Kabir bhajans. Others who will perform on the last day include Arshad Ali Khan (Krishna bhakti); Sumitra Guha (Ram Bhakti) and Master Saleem (Punjabi Sufiana Kalaam).Sahitya Kala Parishad, the cultural wing of the Government of NCT of Delhi was setup in 1968 for the promotion and propagation of Art and Culture in Delhi. As one of the most interactive department of the Delhi Government, Sahitya Kala Parishad for the past three decades and more has been carrying out its mandate with full vigor and dedication. Its projects and programmes concentrate more on youth, women and weaker sections of  society.last_img read more

S Bengal districts likely to receive heavy rainfall over weekend

first_imgKolkata: Some of the South Bengal districts may witness heavy rainfall later this week as another low pressure trough will form over north-west Bay of Bengal. The Regional Meteorological Centre at Alipore on Wednesday predicted districts like East Burdwan, West Burdwan, East and West Midnapore, Birbhum and Nadia will receive heavy rainfall along with lightning in some parts later this week. The other South Bengal districts may also witness moderate rainfall. Also Read – Rain batters Kolkata, cripples normal lifeAccording to the weather office, a low pressure trough is likely to form over north-west Bay-of-Bengal resulting in more rain. There is also prediction of thundershowers in some parts. It may also rain in some of the North Bengal districts from Saturday. Due to the impact of heavy rain, the temperature may drop by a few notches in the city and some South Bengal districts.A senior official of the weather office said that the situation will remain complicated until August 25 due to the formation of a low pressure trough. The condition may improve from the next week, as predicted by the MeT office.It may be mentioned here that heavy rains lashed some of the coastal districts in the state a few days ago. The city and its adjoining areas have been witnessing scattered rainfall for the past few days. A senior weather official said the influence of the low pressure zone, which is likely to become more marked from next Saturday, may bring moderate rainfall in the neighbouring states like Odisha and Jharkhand.last_img read more