Botany online 1996-2004. No further update, only historical document of botanical science!


Silhouettes of an Icosaeder

The images below show an icosaeder in thirty different orientations. They demonstrate the large amount of different shapes that can be seen through an electron microscope after the negative staining of empty coats of icosaedric viruses like the turnip yellow mosaic virus. The front and the back patterns overlap (J. FINCH and A. KLUG, Cambridge, 1966)


© Peter v. Sengbusch - Impressum