From: Georgi Guninski <guninski@guninski.com>
   To: Rayzer <Rayzer@riseup.net>
   On Wed, Jan 06, 2016 at 07:47:02AM -0800, Rayzer wrote:
   > Ps. North Korea successfully detonated a Hydrogen Bomb yesterday.
   >This is interesting.
   >nato and UN are uneasy, they want all the bombs for themselves:
   >[1]http://www.telegraph.co.uk/news/worldnews/asia/northkorea/12084087/
   North-Korea-hydrogen-bomb-Kim-Jong-un-earthquake-live.html
   >UN Security Council meets to discuss the world's response as leaders
   >urge for "strong action" to be taken against Pyongyang following
   H-bomb
   >test which caused 5.1 magnitude earthquake - follow live updates
   The Richter scale is logarithmic:  A "Magnitude 0" earthquake is
   defined as a ground motion of 1 micron (10E-6 meters) 100 kilometers
   away from the epicenter.  Magnitude 1 means 10 microns motion, Mag 2
   means 100 microns motion, etc. (I don't know if "motion" is described
   as "Peak-to-peak" or RMS, root-mean-square).  Energy goes up by a
   factor of about 31 for a magnitude increased by one unit.
          Jim Bell

References

   1. http://www.telegraph.co.uk/news/worldnews/asia/northkorea/12084087/North-Korea-hydrogen-bomb-Kim-Jong-un-earthquake-live.html