Confronted with the Sun as a multi-color phenomenon for the first time: students (and a local press reporter) at the "All- macht Wissen" event in Recklinghausen, Germany, on 23 March 2009.

Confronted with the Sun as a multi-color phenomenon for the first time: students (and a local press reporter) at the "All- macht Wissen" event in Recklinghausen, Germany, on 23 March 2009.