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Gmail is the email service provided by Google. As of 2019, it had 1.5 billion active users worldwide, making it the largest email service in the world. [1] It also provides a webmail interface, accessible through a web browser, and is also accessible through the official mobile application. Google also supports the use of third-party email ...
Single delta potential. The time-independent Schrödinger equation for the wave function ψ(x) of a particle in one dimension in a potential V(x) is. where ħ is the reduced Planck constant, and E is the energy of the particle. The delta potential is the potential. where δ(x) is the Dirac delta function. It is called a delta potential well if ...
1. First flight. 13 May 1960. Last flight. 18 September 1962. [ edit on Wikidata] The Thor-Delta, also known as Delta DM-19 or just Delta was an early American expendable launch system used for 12 orbital launches in the early 1960s. A derivative of the Thor-Able, it was a member of the Thor family of rockets, and the first member of the Delta ...
The symbols Δt and ΔT (spoken as "delta T") are commonly used in a variety of contexts. Time. ΔT (timekeeping) the difference between two time scales, Universal Time and Terrestrial Time, which results from a drift in the length of a day; The interval of time used in determining velocity; The increment between successive nerve impulses
The Yangtze Delta or Yangtze River Delta ( YRD, Chinese: 长江三角洲 or simply Chinese: 长三角 ), previously known as the Shanghai Economic Zone, is a triangle-shaped megalopolis generally comprising the Wu -speaking areas of Shanghai, southern Jiangsu, northern Zhejiang, southern Anhui. The area lies in the heart of the Jiangnan region ...
This followed the retirement of Delta II in 2018 and single-stick (non-Heavy) variants of the Delta IV in 2019. With the start of 2024, Vulcan Centaur took its first flight in time to maintain continuity of ULA's service in the heavy-lift launch vehicle market before the Delta IV Heavy program came to an end three months later on April 9, 2024.
The " Cornfield Bomber " is the nickname given to a Convair F-106 Delta Dart of the United States Air Force 's 71st Fighter-Interceptor Squadron which made an unpiloted landing in a farmer's field in Montana in 1970. Suffering only minor damage after the pilot had ejected from the aircraft during a training mission gone awry, the aircraft was ...
The Ganges Delta (also known the Ganges-Brahmaputra Delta, the Sundarbans Delta or the Bengal Delta [1]) is a river delta in Eastern South Asia predominantly covering the Bengal region of the subcontinent, consisting of Bangladesh and the Indian state of West Bengal. It is the world's largest river delta [2] [3] and it empties into the Bay of ...