False-colour scanning tunnelling micrograph (STM) of a DNA double-helix; approximately three turns of the helix are displayed in this image. An STM image is formed by scanning a fine point just above the specimen surface & electronically recording the height of the point as it moves. In this case,the image data were obtained by measuring the height of the DNA molecule (adsorbed on a graphite substate) at intervals of 20 trillionths of a metre apart. Magnification: x2,000,000 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / DRISCOLL, YOUNGQUIST & BALDESCHWIELER, CALTECH |
Taille de l’image : | 2582 px × 3547 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |