Monday, March 22, 2010

y11

y11

y11

Friday, March 19, 2010

y13

Tuesday, March 16, 2010

y13

Solar wind and earth's magnetic field

http://twyfordphysics.blogspot.com/2007/05/y10_04.html

y11

See here
http://twyfordphysics.blogspot.com/2009/01/y11_15.html

Thursday, March 11, 2010

Tuesday, March 09, 2010

y12







Thursday, March 04, 2010

y12

y12











Wednesday, March 03, 2010

y12

Monday, March 01, 2010