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Molcajete used to grind spices Molcajete as a food container. Molcajetes are used to crush and grind spices, and to prepare salsas and guacamole.The rough surface of the basalt stone creates a superb grinding surface that maintains itself over time as tiny bubbles in the basalt are ground down, replenishing the textured surface.
500 BC – The moldboard iron plough is invented in China; 500 BC – Row cultivation of crops using intensive hoeing to weed and conserve moisture practised in China; 300 BC – Efficient trace harness for plowing invented in China; 200 BC – Efficient collar harness for plowing invented in China; 100 BC – Rotary winnowing fan invented in China
The timeline of wars has been split up in the following periods: List of wars: before 1000; List of wars: 1000–1499; List of wars: 1500–1799; List of wars: 1800–1899; List of wars: 1900–1944; List of wars: 1945–1989; List of wars: 1990–2002; List of wars: 2003–present
The following dates are approximations. 700 BC: Pythagoras's theorem is discovered by Baudhayana in the Hindu Shulba Sutras in Upanishadic India. [18] However, Indian mathematics, especially North Indian mathematics, generally did not have a tradition of communicating proofs, and it is not fully certain that Baudhayana or Apastamba knew of a proof.
Data collection and validation consist of four steps when it involves taking a census and seven steps when it involves sampling. [3] A formal data collection process is necessary, as it ensures that the data gathered are both defined and accurate. This way, subsequent decisions based on arguments embodied in the findings are made using valid ...
Joseph Priestley's A New Chart of History, 1765 The bronze timeline "Fifteen meters of History" with background information board, Örebro, Sweden. A timeline is a list of events displayed in chronological order. [1]
Malted milk invented and marketed in England by James Horlick, and in 1873 started the J & W Horlicks company with his brother in Chicago. The first US patent for malted milk mixing powder was granted them in 1883. [110] Beverages England 1875 Milk chocolate in solid form invented by Swiss chocolatier Daniel Peter (initially meant for making a ...
The work has been lost, but based on the reports of later authors, it contained the first use of permutations and combinations to list all possible Arabic words with and without vowels. [1] 9th century - Al-Kindi was the first to use frequency analysis to decipher encrypted messages and developed the first code breaking algorithm.