Stamp: Frost (Hong Kong 2014)
Frost (Hong Kong 2014)
27 March (Hong Kong ) within release Weather Phenomena goes into circulation Stamp Frost face value 2.20 Hong Kong dollar
| Stamp Frost in catalogues | |
|---|---|
| Michel: | Mi:HK 1878 |
Stamp is square format.
Frost forms when water vapour freezes into ice crystals. When the surface temperature of an object falls below freezing point, frost appears. The stamp portrays frost formed on the surface of a plant in cold weather in Hong Kong. Frost is white and is usually found on the ground or exposed objects.Also in the issue Weather Phenomena:
- Stamp - Rainbow face value 1.70;
- Stamp - Frost face value 2.20;
- Stamp - Cloud face value 2.90;
- Stamp - Lightning face value 3.10;
- Stamp - Fog face value 3.70;
- Stamp - Rain face value 5;
- Stamp - Typhoon face value 5;
- Souvenir Sheet - Typhoon face value 20;
- Souvenir Sheet - Typhoon face value 5;
- Souvenir Sheet - Typhoon face value 20;
- Booklet - Weather Phenomena face value 53;
Stamp Frost it reflects the thematic directions:
Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting. The study of meteorology dates back millennia, though significant progress in meteorology did not begin until the 18th century. The 19th century saw modest progress in the field after weather observation networks were formed across broad regions. Prior attempts at prediction of weather depended on historical data. It was not until after the elucidation of the laws of physics, and more particularly in the latter half of the 20th century, the development of the computer (allowing for the automated solution of a great many modelling equations) that significant breakthroughs in weather forecasting were achieved. An important branch of weather forecasting is marine weather forecasting as it relates to maritime and coastal safety, in which weather effects also include atmospheric interactions with large bodies of water.
