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Māshāʾallāh ibn Atharī (Arabic: ما شاء الله إبن أثري; c. 740 – 815), known as Mashallah, was an 8th century Persian Jewish astrologer, astronomer, and mathematician. [1] Originally from Khorasan , [ 2 ] he lived in Basra (in present day Iraq) during the reigns of the Abbasid caliphs al-Manṣūr and al-Ma’mūn , and was ...
The oldest known multiplication tables were used by the Babylonians about 4000 years ago. [2] However, they used a base of 60. [2] The oldest known tables using a base of 10 are the Chinese decimal multiplication table on bamboo strips dating to about 305 BC, during China's Warring States period. [2] "Table of Pythagoras" on Napier's bones [3]
Maslaha or maslahah (Arabic: مصلحة, lit. ' public interest ') is a concept in Sharia (Islamic divine law) regarded as a basis of law. [1] It forms a part of extended methodological principles of Islamic jurisprudence (uṣūl al-fiqh) and denotes prohibition or permission of something, according to necessity and particular circumstances, on the basis of whether it serves the public ...
For example, both devices types were programmable in unstructured BASIC and with few exceptions featured QWERTY keyboards. However, there were also some differences: BASIC-programmable calculators often featured an additional "calculator-like" keyboard and a special calculator mode in which the system behaved like a scientific calculator.
However, in a longer race, where the results include times both below and above 10 minutes, then times of 10 to 19 minutes will sort before any lower time of 2 minutes and above. A similar problem occurs in tables holding results above and below 1 minute, or above and below 1 hour, or in tables holding results above and below 10 hours.
School timetable, a table for coordinating students, teachers, rooms, and other resources; Time horizon, a fixed point of time in the future at which point certain processes will be evaluated or assumed to end; Timeline, a project artifact. It is typically a graphic design showing a long bar labeled with dates alongside itself and (usually ...
Khwarizmi made tables for these instruments which considerably shortened the time needed to make specific calculations. Sundials were frequently placed on mosques to determine the time of prayer. One of the most striking examples was built in the 14th century by the muwaqqit (timekeeper) of the Umayyad Mosque in Damascus, ibn al-Shatir. [82]
Ottoman muwaqqits also adapted existing tables to the Ottoman convention of defining 12:00 o'clock at sunset, requiring varying amounts of time shifts each day. [39] Setting one's personal watch according to the clocks at muvakkithanes was a common practice after the spread of personal timepieces in late eighteenth century. [ 38 ]