1 US patent 1446758, Thaddeus McHugh, Neck for musical instruments, issued 1923-02-27 Patent on truss rod. Note that the diagram in McHugh's patent document shows an incorrect design for the truss rod channel.
The Tsar Bomba was the culmination of a series of high-yield thermonuclear weapons designed by the Soviet Union and the United States during the 1950s (examples include the Mark-17 and B41).one of total destruction of the Tsar Bomba (as an example â over a map of Paris): red circle = total destruction (radius 35 kilometres (22 mi)), yellow circle = fireball (radius 3.5 kilometres (2.2 mi)).
The Russian Revolution is the collective term for a pair of revolutions in Russia in 1917, which dismantled the Tsarist autocracy and led to the eventual rise of the Soviet Union.he Russian Empire collapsed with the abdication of Emperor Nicholas II, and the old regime was replaced by a provisional government during the first revolution of February 1917 (March in the Gregorian calendar; the older Julian calendar was in use in Russia at the time).