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The amount of coherence can readily be measured by the interference visibility, which looks at the size of the interference fringes relative to the input waves (as the phase offset is varied); a precise mathematical definition of the degree of coherence is given by means of correlation functions. More generally, coherence describes the ...
Google Calendar is a time-management and scheduling calendar service developed by Google.It was created by Mike Samuel as part of his 20% project at Google. [5] [6] It became available in beta release April 13, 2006, and in general release in July 2009, on the web and as mobile apps for the Android and iOS platforms.
Popular 1930s poster depicting Gandhi using a charkha to spin cotton and weave cloth, captioned "Concentrate on Charkha and Swadeshi". The Swadeshi movement was a self-sufficiency movement that was part of the Indian independence movement and contributed to the development of Indian nationalism. [1]
In 2020, previous results are confirmed for the year 2019: mean car speed was reduced between 2.9 and 3.9 km/h, while mean speed of trucks was reduced by 2 km/h without speed limit change. By the same time, fatalities were reduce by 125 in the second semester 2018, by 84 in the first semester 2019, and 127 for the second semester 2019. [120]
OpenStreetMap (abbreviated OSM) is a free, open geographic database updated and maintained by a community of volunteers via open collaboration.Contributors collect data from surveys, trace from aerial photo imagery or satellite imagery, and also import from other freely licensed geodata sources.
Cirque du Soleil (French: [siʁk dy sɔlɛj], Canadian French: [sɪʁk d͡zy sɔlɛj]; "Circus of the Sun" or "Sun Circus") is a Canadian entertainment company and the largest contemporary circus producer in the world. [7]
Rayleigh waves are a type of surface acoustic wave that travel along the surface of solids. They can be produced in materials in many ways, such as by a localized impact or by piezo-electric transduction, and are frequently used in non-destructive testing for detecting defects.
2009 – Waze (then named FreeMap Israel), a community-oriented GPS app, was created. [38] It allows users to submit road information and route data based on location, such as reports of car accidents or traffic, and integrates that data into its routing algorithms for all users of the app.