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The first bone scrapers appropriate for scraping hides to make supple leather were found in Morocco dating to 90–120,000 years ago. [29] [30] 164 kya – 47 kya: Heat treating of stone blades in South Africa. [31] 135 kya – 100 kya: Beads in Israel and Algeria [32] 100 kya: Compound paints made in South Africa [33] [34] [35]
The fact that something invented over 150 years ago can still seem ingenious is impressive. This mannequin, which can adjust to be just about any size a human can be, is an example of such an ...
The fact that something invented over 150 years ago can still seem ingenious is impressive. This mannequin, which can adjust to be just about any size a human can be, is an example of such an ...
An ice pop is a frozen water-based dessert on a stick. It is made by freezing a colored, flavored liquid around a stick. Once the liquid freezes solid, the stick can be used as a handle to hold the ice pop. The ice pop was invented by 11-year-old Frank Epperson in 1905. Living in San Francisco, California, Epperson had left a fruit drink out ...
Year Event 600 BCE: Ancient Greek philosopher Thales of Miletus described static electricity by rubbing fur on substances such as amber. 1600: English scientist William Gilbert coined the word electricus after careful experiments. He also explained the magnetism of Earth. 1660: German scientist Otto von Guericke invented a device that creates ...
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
[5] The Patent Act of 1836 (Ch. 357, 5 Stat. 117) further clarified United States patent law to the extent of establishing a patent office where patent applications are filed, processed, and granted, contingent upon the language and scope of the claimant's invention, for a patent term of 14 years with an extension of up to an additional 7 years ...
Nikola Tesla was a famous 20th century Serbian-American scientist who is most famous for designing the alternating current (AC) electricity supply system. The world-famed engineer could speak in ...