Genetics is the study of genes, heredity, and genetic variation in living organisms. It is generally considered a field of biology, but it intersects frequently with many of the life sciences and is strongly linked with the study of information systems. The father of genetics is Gregor Mendel, a late 19th-century scientist and Augustinian friar. Mendel studied 'trait inheritance', patterns in the way traits were handed down from parents to offspring. He observed that organisms (pea plants) inherit traits by way of discrete units of inheritance.
Razors come in two varieties, dual bevel or single bevel. They are identified by whether both sides are angled, which creates a side-view like an isosceles triangle, or just single-angled. The single-angled is straight one one side and angled on the other. When talking about sharpening blades to a particular angle, the sharpening needs to occur equally to both sides of the dual-angle blade. For instance, the ideal shave is achieved with a 15 to 20 degree bevel angle.
The Scandinavian Grind. The Scandinavian Grind is a wide flat bevel that runs to the edge of the blade There is little or no secondary bevel. The primary angle is engineered to match the quality of the steel and intended use.The result is a very keen edge that provides excellent control of the cut.ost knives, especially those from factories, combine two or three planes on each side of the blade. There is often a flat portion near the spine of the blade. The primary grind, that reduces the thickness of the blade to form the edge, may be concave, flat, or convex.