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.
Popular Types of Kale and Their Health Benefits. Praised for being exceptionally nutrient rich, kale has been a focus of the health community in recent years. This nutritious vegetable comes from the Brassica family, which are vegetables with the characteristics of loosely crinkled green or purple leaves and central leaves that do not form a head. This vegetable group includes wild cabbage, collard greens, broccoli, cauliflower, and Brussels sprouts. Most kale types tend to be a bit bitter in flavor, but a lot of this bitterness can be tamed by washing it well, through the cooking process, or simply by using younger leaves.