![]() The next year, its client base increased to 23,000 businesses in more than 30 countries. Lightspeed was serving 21,000 businesses and its per year transactions increased from $6 billion to $8.2 billion. The same year, it expanded its reach into the restaurant and hospitality industry in 2014 by the Belgian startup POSIOS. In September, Lightspeed closed a $35 million investment round led by iNovia Capital. On June 18, 2014, the company added Advanced Analytics to Lightspeed Retail's feature roster. At the time, the company had more than 15,000 store locations. Lightspeed's customers processed $7.5 billion in 2013. It acquired MerchantOS, point-of-sale software developer, and Lightspeed Retail, an HTML5 web-based product that can be used from any computer in 2013. Īccel Partners led a $30 million investment round in 2012 and from 2012 to 2013, the company observed a 120% growth in annual transactions. Profit has ranked Lightspeed 24th in 2011 and 61st in 2012 on its list of "Canada's 200 fastest growing companies". The company is backed by iNovia Capital and Accel Partners. It has its offices in Montreal, New York, Ottawa, Toronto, London, Paris, Belfast, Amsterdam, Berlin, Geneva, Ghent and Melbourne. In 2014, it expanded its customer base to include the hospitality industry. Lightspeed was founded by Dax da Silva in 2005, with its headquarters in Montreal, to provide point-of-sale and e-commerce software to retail businesses. It offers its services to retail, restaurant, and hospitality businesses. It has offices in Montreal, New York, Ottawa, Toronto, London, Belfast, Amsterdam, Berlin, Geneva, Ghent and Melbourne. It was founded in 2005 by Dax da Silva who served as the CEO of the company until February 2, 2022. Brady Haran for the University of Nottingham.Lightspeed Commerce is a point-of-sale and e-commerce software provider based in Montreal, Quebec, Canada. Brady Haran for the University of Nottingham. "γ – Lorentz Factor (and time dilation)". et al., iPTF14yb: The First Discovery of a Gamma-Ray Burst Afterglow Independent of a High-Energy Trigger, Astrophysical Journal Letters 803, 2015, L24 (6 pp). ^ Cameron R D Bunney and Jorma Louko 2023 Class.Jackson, See page 7 for definition of rapidity. ^ Kinematics Archived at the Wayback Machine, by J.D.Sears' and Zemansky's University Physics (12th ed.). ^ Yaakov Friedman, Physical Applications of Homogeneous Balls, Progress in Mathematical Physics 40 Birkhäuser, Boston, 2004, pages 1-21.^ a b Forshaw, Jeffrey Smith, Gavin (2014).^ One universe, by Neil deGrasse Tyson, Charles Tsun-Chu Liu, and Robert Irion. ![]() However, it has been found that ~10% of muons are still detected on the surface, thereby proving that to be detectable they have had their decay rates slow down relative to our inertial frame of reference. As an example, muons generally have a mean lifetime of about 2.2 μs which means muons generated from cosmic ray collisions at about 10 km up in the atmosphere should be non-detectable on the ground due to their decay rate. Subatomic particles called muons travel at a speed such that they have a relatively high Lorentz factor and therefore experience extreme time dilation. The standard model of long-duration gamma-ray bursts (GRBs) holds that these explosions are ultra-relativistic (initial γ greater than approximately 100), which is invoked to explain the so-called "compactness" problem: absent this ultra-relativistic expansion, the ejecta would be optically thick to pair production at typical peak spectral energies of a few 100 keV, whereas the prompt emission is observed to be non-thermal. E k = E − E 0 = ( γ − 1 ) m 0 c 2 holds to within 1% tolerance for γ > 2, and to within 0.1% tolerance for γ > 3.5.
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