WebHistory. The idea of transatlantic flight came about with the advent of the hot air balloon.The balloons of the period were inflated with coal gas, a moderate lifting medium compared to hydrogen or helium, but with enough lift to use the winds that would later be known as the Jet Stream.In 1859, John Wise built an enormous aerostat named the …

WebLoon LLC was an Alphabet Inc. subsidiary working on providing Internet access to rural and remote areas. The company used high-altitude balloons in the stratosphere at an altitude of 18 km (11 mi) to 25 km (16 mi) to create an aerial wireless network with up to 1 Mbit/s speeds. A reference to the balloons used, Project Loon began as a research and …

WebOn 13 August 1989, two hot air balloons collided near Alice Springs, Northern Territory, Australia, causing one to crash to the ground, killing thirteen people.It was the world's deadliest ever ballooning disaster until February 2013, when a balloon accident near Luxor, Egypt killed 19 people. As of July 2016, it remains the deadliest ever ballooning accident …

WebSommaire déplacer vers la barre latérale masquer Début 1 Histoire Afficher / masquer la sous-section Histoire 1.1 Années 1970 et 1980 1.2 Années 1990 1.3 Début des années 2000 2 Désignations 3 Types de livres numériques Afficher / masquer la sous-section Types de livres numériques 3.1 Homothétique 3.2 Enrichi 3.3 « Originairement numérique » 4 …

WebWeather balloon radiosonde measurements of atmospheric temperature at various altitudes begin to show an approximation of global coverage in the 1950s. Since December 1978, microwave sounding units on satellites have produced data which can be used to infer temperatures in the troposphere. Several groups have analyzed the satellite data to …

WebInert gas asphyxiation is a form of asphyxiation which results from breathing a physiologically inert gas in the absence of oxygen, or a low amount of oxygen, rather than atmospheric air (which is composed largely of nitrogen and oxygen). Examples of physiologically inert gases, which have caused accidental or deliberate death by this …

WebScottish perspective on news, sport, business, lifestyle, food and drink and more, from Scotland's national newspaper, The Scotsman.

WebSupersonic speed is the speed of an object that exceeds the speed of sound (Mach 1).Flights during which only some parts of the air surrounding an object, such as the ends of rotor blades, reach supersonic speeds are called transonic.This occurs typically somewhere between Mach 0.8 and Mach 1.2.

WebOct 19, 2022 · Microsoft’s Activision Blizzard deal is key to the company’s mobile gaming efforts. Microsoft is quietly building a mobile Xbox store that will rely on Activision and King games.

WebA nuclear meltdown (core meltdown, core melt accident, meltdown or partial core melt) is a severe nuclear reactor accident that results in core damage from overheating. The term nuclear meltdown is not officially defined by the International Atomic Energy Agency or by the United States Nuclear Regulatory Commission. It has been defined to mean the …

WebSaturn’s largest moon Titan is one of several candidates for possible future colonization of the outer Solar System, though protection against extreme cold is a major consideration.. According to Cassini data from 2008, Titan has hundreds of times more liquid hydrocarbons than all the known oil and natural gas reserves on Earth. These hydrocarbons rain from …

WebThe Visakhapatnam gas leak, also referred to as the Vizag gas leak, was an industrial accident that occurred at the LG Polymers chemical plant in the R. R. Venkatapuram village of the Gopalapatnam neighbourhood, located at the outskirts of Visakhapatnam, Andhra Pradesh, India, during the early morning of 7 May 2020.The resulting vapour cloud …

WebMagnetic confinement fusion is an approach to generate thermonuclear fusion power that uses magnetic fields to confine fusion fuel in the form of a plasma.Magnetic confinement is one of two major branches of fusion energy research, along with inertial confinement fusion.The magnetic approach began in the 1940s and absorbed the majority of …

WebKevin Costner says it's 'OK' if people don't like him for his politics. Kevin Costner doesn't care if he loses fans over his politics. Costner, an Independent, voted for Barack Obama in 2008 and Joe Biden in 2020 — the latter came after his first pick, now-Transportation Secretary Pete Buttigieg, dropped out of the Democratic presidential race.