Editing 1906 in science (section)

==Chemistry==
* [[Charles Barkla]] discovers that each element has a characteristic [[X-ray]] and that the degree of penetration of these X-rays is related to the [[atomic weight]] of the element.
* [[Mikhail Tsvet]] first names the [[chromatography]] technique for organic compound separation, in the course of demonstrating that [[chlorophyll]] is not a single [[chemical compound]].<ref>{{cite journal|first=Mikhail|last=Tswett|year=1906|title=Physikalisch-Chemische Studien über das Chlorophyll: Die Adsorption|journal=Berichte der Deutschen Botanischen Gesellschaft|volume=24|pages=316–326}}</ref><ref>{{cite journal|first=Mikhail|last=Tswett|year=1906|title=Adsorptionanalyse und chromatographische Methode: Anwendung auf die Chemie des Chlorophylls|journal=Berichte der Deutschen Botanischen Gesellschaft|volume=24|pages=384–393}}</ref>