Abstract
As a part of the study on the snow crystals with spatial branches, supercooled water droplets were made to attach and freeze to the surface of an ice plate at -10, -20 and -28°C air temperatures, then spatial branches of the dendritic form were formed on the frozen droplets at -15°C air temperature. And the angle between the branches and the ice plate was measured by the use of a universal stage.
As a result of the measurement, it was found that at -20 and -28°C temperatures the angles were concentrated to 80°, however at -10°C temperature the angles were mostly distributed in the range between 40 and 50°.
This result shows that the angle of spatial branches to the basal ice plate is not only determined by the lattice misfit of ice crystals, but is affected by a temperature where supercooled droplets were frozen on the ice plate.
