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.
Edible green leaves have an abundance of nutrients. Dark green leafy vegetables are nutritional powerhouses filled with vitamins, minerals and phytonutrients. They are rich in chlorophyll, which alkalinizes the blood, and fiber, which keeps the colon healthy.ruciferous Leafy Greens. Kale, mustard greens, collard greens, cabbage and broccoli are cruciferous leafy greens. Cruciferous vegetables are high in nutrients and contain glucosinolates, which inhibit the growth of certain cancers.