Mobile balers, machines which gather and bale hay in one process, were first developed around 1940. The first balers produced rectangular bales small enough for a person to lift, usually between 70 and 100 pounds (32 and 45 kg) each. The size and shape made it possible for people to pick bales up, stack them on a vehicle for transport to a storage area, then build a haystack by hand.
From Wikipedia, the free encyclopedia. An F1 hybrid (or filial 1 hybrid) is the first filial generation of offspring of distinctly different parental types. F1 hybrids are used in genetics, and in selective breeding, where it may appear as F1 crossbreed. The term is sometimes written with a subscript, as F1 hybrid. The offspring of distinctly different parental types produce a new, uniform phenotype with a combination of characteristics from the parents.
The first wave refers to the feminist movement of the 19th through early 20th centuries, which focused mainly on women's suffrage. Writers such as Virginia Woolf are associated with the ideas of the first wave of feminism.he term first-wave was coined retrospectively after the term second-wave feminism began to be used to describe a newer feminist movement that focused as much on fighting social and cultural inequalities as further political inequalities.