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The Reynolds number is the ratio of inertial forces to viscous forces within a fluid that is subjected to relative internal movement due to different fluid velocities. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.
In rural areas with magneto crank telephones connected to party lines, the local phone number consisted of the line number plus the ringing pattern of the subscriber. To dial a number such as "3R122" meant making a request to the operator the third party line (if making a call off your own local one), followed by turning the telephone's crank once, a short pause, then twice and twice again. [10]
The Richardson number ( Ri) is named after Lewis Fry Richardson (1881–1953). [1] It is the dimensionless number that expresses the ratio of the buoyancy term to the flow shear term: [2] where is gravity, is density, is a representative flow speed, and is depth. The Richardson number, or one of several variants, is of practical importance in ...
A reverse telephone directory (also known as a gray pages directory, criss-cross directory or reverse phone lookup) is a collection of telephone numbers and associated customer details. However, unlike a standard telephone directory, where the user uses customer's details (such as name and address) in order to retrieve the telephone number of ...
Land line phone numbers in Kenya follow the format Area Code + Phone Number. To dial a number within an area or city, only the phone number needs to be dialled. When dialling from a different area or city, the telephone number is dialled in the format 0 + Area Code + Phone Number. When dialling from abroad, the 0 is omitted.
To dial a land line in Cambodia all over the country, the format is Area Code + Phone Number. The area code is 3 digits long, followed by a 6 or 7 digit phone number. Calls made from outside Cambodia must omit the prefix 0. Therefore, to call a land line number in Phnom Penh from other countries, dialing begins with +855 23 followed by 6 or 7 ...
Total number portability. Total number portability exists in Chile, so users can freely move from one service provider to another without losing their number, regardless of connection technology, whether land-line, mobile or VoIP. Therefore, a number beginning with "8" or "9" no longer denotes that it is a mobile phone number.
Ethnologue (2023) The following languages are listed as having 45 million or more total speakers in the 26th edition of Ethnologue published in 2023. [4] This section does not include entries that Ethnologue identifies as macrolanguages encompassing all their respective varieties, such as Arabic, Lahnda, Persian, Malay, Pashto, and Chinese .