Image courtesy of SOHO/EIT consortium. SOHO is a project of international cooperation between ESA and NASA.

Errata

Following corrections have been made to this Web-document since the articles original publication in Herpetomania Vol. 13, No 3-4, 2004. These edits are not included in the downloadable PDF.
The time for hazardous dose of UV radiation for Active UVHeat was reported only half of the true value. Data corrected here.