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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.
Tridilosa: invented by civil engineer Heberto Castillo. Anti-graffiti coating (Deletum 3000): developed in the early 2000s at UNAM’s Applied Physics and Advanced Technology Centre in Querétaro Mexico. Earthquake Resistant Foundations: invented by engineer Manuel González Flores in 1945.
Remnants of popcorn have been found in Mexico that date to circa 3600 BC. The origin of tacos is based on the pre-Hispanic custom of picking up other foods with tortillas as utensils were not used. [13] The origin of the word is in dispute, with some saying it is derived from Nahuatl and others from various Spanish phrases. [43]
1926: The Yagi-Uda Antenna or simply Yagi Antenna is invented by Shintaro Uda of Tohoku Imperial University, assisted by his colleague Hidetsugu Yagi. The Yagi Antenna was widely used during World War II. After the war they saw extensive development as home television antennas. 1926: Robert H. Goddard launches the first liquid fueled rocket.
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
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
John Gorrie, an American doctor from Florida, invented the first mechanical refrigeration unit in 1841, based on Evans' original invention to make ice in order to cool the air for yellow fever patients. Gorrie's mechanical refrigeration unit was issued a patent in 1851. [49]
The scythed chariot was later invented in India and soon adopted by the Persians. [31] War elephants were sometimes deployed for fighting in ancient warfare. They were first used in India and later adopted by the Persians. War elephants were also used in the Battle of the Hydaspes River, and by Hannibal in the Second Punic War against the ...