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 Tsar Bomba had a payload of 50 megatons and the blast radius was 35 km but flatted trees, etc from over 50 km away. The Tsar Bomba mushroom cloud seen from a distance of 161 km (100 miles). The crown of the cloud is 56 km (35 miles) high at the time of the picture.