Abstract: The ice-nucleating properties of 1-leucine, d-valine and 1-aspartic acid have been studied in detail in order to check a report that certain amino acids including d-valine behaved anomalously, being more effective in a ...

Abstract: Thousands of ice crystals are generated by placing an electrified wire in a supercooled cloud. The crystals result from the growth of fragile forms of ice on the wire, followed by fragmentation of these forms under the ...

Abstract: On a silver iodide surface, the number of ice nucleating sites capable of nucleating ice by the freezing mechanism is found to be about one hundred times the number which nucleate ice by sorption at water saturation. This ...

Abstract: The ability of silver-iodide particles to act as ice nuclei has been studied under controlled conditions of temperature and humidity. Particles up to 100Å in radius are largely ineffective as ice nuclei unless the humidity, ...

Abstract: An attempt has been made to estimate the contribution of diffusiophoresis to the collision rate between silver iodide nuclei and cloud droplets growing under conditions simulating those in a natural cumulus cloud. ...

Abstract: The theory of heterogeneous nucleation which dominates the cloud physics field neglects the effect of the line tension which operates at the perimeter of the embryo-substrate interface. Without the inclusion of the line ...

Abstract: Experimental evidence is presented to show that the process of activation in ice nucleation is due to a surface phase change which takes place within the layer of water adsorbed on the nucleating substrate. The outstanding ...

Abstract: An electrified wire suspended in a supercooled cloud generates a jet of ice crystals only when there is ice on the wire. On a clean platinum wire no ice forms an the wire down to ?20C, but if the wire is coated with a ...

Abstract: The ability of dry ice to generate ice crystals in supercooled clouds has been studied under conditions which closely simulate the ?free-falling? dry ice pellets of a cloud seeding operation. In conjunction with separate ...