http://video.nationalgeographic.com/video/player/environment/environment-nat ural-disasters/earthquakes/earthquake-101.html
-----Original Message----- From: Medic [mailto:[email protected]] Sent: Tuesday, August 23, 2011 5:14 PM To: cf-community Subject: Re: well... i just survived a 5.8mag earthquake > > "In all cases, the magnitude is a base-10 logarithmic scale obtained > by calculating the logarithm of the amplitude of waves measured by a > seismograph. An earthquake that measures 5.0 on the Richter scale has > a shaking amplitude 10 times larger than one that measures 4.0." > Metric or Imperial? A metric amplitude of 10 is roughly equivalent to a 30 imperial amplitude. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-community/message.cfm/messageid:341907 Subscription: http://www.houseoffusion.com/groups/cf-community/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-community/unsubscribe.cfm
