Search results
Results from the WOW.Com Content Network
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]
Obsolete technology Replacement Still used for Bathing machine: No longer required due to changing social standards of morality Hourglass: Clock: Tasks where a fixed amount of time can be measured with a low-tech solution: Exposure time tracker in saunas (where electronics might be damaged by the heat or ultraviolet light); retro kitchen timers, board games, other short-term timers.
100: Menelaus of Alexandria describes spherical triangles, a precursor to non-Euclidean geometry. [69] 150: The Almagest of Ptolemy contains evidence of the Hellenistic zero. Unlike the earlier Babylonian zero, the Hellenistic zero could be used alone, or at the end of a number.
Inuit snow goggles from Alaska. Made from carved wood, 1880-1890 (top) and Caribou antler 1000-1800 (bottom) (Wikimedia Commons/Jaredzimmerman (WMF)) Springtime in the Arctic is beautiful. The sun ...
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.
At 78 RPM mechanically scanned, the images can be played back on his "telescreen". It could not play sound nor keep up with the rapidly increasing resolution of television. More than 40 years later, commercial optical disc players came onto the market. 1928: Fritz Pfleumer got the first tape recorder patent.
Counting down to Christmas was done at least 100 years ago. This reminder appeared in the Daily Eagle on Dec. 4, 1924. The Pet and Novelty Shoppe announced they were opening at the end of the year ...
The names of some modern inventions (atomic bomb, credit card, robot, space station, oral contraceptive and borazon) exactly match their fictional predecessors. A few works correctly predicted the years when some technologies would emerge, such as the first sustained heavier-than-air aircraft flight in 1903 and the first atomic bomb explosion ...