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.
Tsar Bomba (Russian: ÑÐ°ÑÑ-Ð±Ð¾Ð¼Ð±Ð°;  Tsar of bombs) is the nickname for the AN602 hydrogen bomb, the most powerful nuclear weapon ever detonated.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 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).he February Revolution (March 1917) was a revolution focused around Petrograd (now Saint Petersburg). In the chaos, members of the Imperial parliament or Duma assumed control of the country, forming the Russian Provisional Government.