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.
A. Kohlrabi is a member of the cabbage family grown for its swollen, turnip-shaped portion of the stem which rests on the ground. The edible portion can be white, purple or green with a creamy white interior. They are eaten raw in salads or can be cooked like a turnip.he part we eat is the enlarged stem from which the leaves develop. The enlarged stem is best harvested as soon as it grows to a diameter of two to three inches. Kohlrabi may be white, green or purple in color. Leaves of young plants may be used like spinach, or mustard greens.