| RefNo | EC/1961/14 |
| Previous numbers | Cert XVII, 14 |
| Level | Item |
| Title | London, Heinz: certificate of election to the Royal Society |
| Date | 16 March 1961 |
| Description | Certificate of Election |
| Citation | Populated the finite depth to which a magnetic field penetrates into a superconductor. Suggested and first carried out an experiment (high frequency dissipation) proving the existence of this effect. The concept of the "depth of penetration" has initiated a great number of experiments and has also led to the development (by H. London together with his brother F. London) of the electrodynamics of superconductivity.
First considered the relation of size and critical field in superconductors, introducing the concept of surface energy. Postulated the increase of the critical field with decreasing size on a thermodynamical basis and demonstrated the existence of a striking effect of this kind by direct experiment (with Appleyard and others). Investigated experimentally the question of the existence of an electric field in a superconductor.
Applied thermodynamics to the thermo-mechanical effect in liquid helium II and derived a relation (which now bears his name) between entropy, temperature and thermo-mechanical pressure which has since been verified experimentally and which has been of great value to the understanding of the helium II problem.
Has developed a new method for the separation of O-13 and O-18 isotopes by the distillation of carbon monoxide. Has recently published work on the differences in the molecular volume of isotopes. |
| Proposers | From Personal Knowledge: Proposer - J D Cockcroft; Seconder - B J Schonland; N F Mott; D Shoenberg; J F Allen; N Kurti; B Bleaney; K Mendelssohn |
| AccessStatus | Open |
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Fellows associated with this archive
| Code | PersonName | Dates |
| NA5033 | London; Heinz (1907 - 1970) | 1907 - 1970 |