The first solar car was invented by William G. Cobb, the inventor for General Motors, in 1955, and this was followed by the invention of the first solar car which facilitated human transportation by the International Rectifier Company in 1958.
A birch is a thin-leaved deciduous hardwood tree of the genus Betula (/ËbÉtjÊlÉ/), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae.
The front and rear sides of a piece of birch bark. Birch species are generally small to medium-sized trees or shrubs, mostly of northern temperate and boreal climates. The simple leaves are alternate, singly or doubly serrate, feather-veined, petiolate and stipulate. They often appear in pairs, but these pairs are really borne on spur-like, two-leaved, lateral branchlets. The fruit is a small samara, although the wings may be obscure in some species.