Surface tension is a phenomenon in which the surface of a liquid, where the liquid is in contact with gas, acts like a thin elastic sheet. This term is typically used only when the liquid surface is in contact with gas (such as the air). Causes of Surface Tension.
There are several varieties commonly available, including White Vienna, Purple Vienna, Grand Duke, Gigante (also known as Superschmelz), Purple Danube, and White Danube. Coloration of the purple types is superficial: the edible parts are all pale yellow. The leafy greens can also be eaten.ohlrabi (German turnip or turnip cabbage; Brassica oleracea Gongylodes Group) is an annual vegetable, and is a low, stout cultivar of cabbage. Kohlrabi can be eaten raw as well as cooked.
Kohlrabi is a hardy, cool-season vegetable. It is a member of the cabbage family, and the edible part is a swollen stem. This globelike stem tastes like a mild turnip. Planting kohlrabi seeds while the soil is at the optimum temperature ensures speedy germination.Kohlrabi takes 42 to 60 days to produce and should be picked while it is still less than 3 inches in diameter.Larger kohlrabi can be tough and woody.ohlrabi seeds germinate when the soil is between 40 and 90 F. The optimum temperature is 80 F. The seeds take from three to 10 days to germinate. They should be planted 1/4 inch deep.