13:0113:01, 27 August 2009diffhist+195
Circumhorizontal arc
25th Aug reference to thick plates and specific phenomena removed as thick plates not needed and the *ranges* of conditions producing the arc are already described. Nomenclature re-introduced
13:0113:01, 27 August 2009diffhist+195
Circumhorizontal arc
25th Aug reference to thick plates and specific phenomena removed as thick plates not needed and the *ranges* of conditions producing the arc are already described. Nomenclature re-introduced