Back"staff`, n.
Definition: An instrument formerly used for taking the altitude of the heavenly bodies, but now superseded by the quadrant and sextant; -- so called because the observer turned his back to the body observed.
Source: Webster’s Unabridged Dictionary 1913 Edition
17 March 2025
(noun) magnet made of a substance whose magnetization is proportional to the strength of the magnetic field applied to it
According to Guinness World Records, on 25 September 2016, the Birla Institute of Management Technology (India) in Uttar Pradesh, India, constructed the largest coffee cups pyramid consisting of 23,821 cups. They used paper takeaway coffee cups to build the pyramid.
