In ancient Chinese agriculture of the third century B.C., the iron plow was invented to make it easier to work the soil. These were called "kuan" or moldboard plows and were eventually pulled by oxen.
During the Zhou period, there were improved iron casting techniques leading to its use in creating tools and weapons. By 400 B.C., iron was prominent in agriculture. The Chinese grew soybeans and rice in rows, which were more effective by plowing. The plows were shaped like a "V" with a sharp point and side wings to cut and move the soil. At first, these plows were pushed by cultivators; however, by the first century B.C., cattle were used to pull them more quickly.
In the Western world, Jethro Wood became the first to patent the iron plow in 1819. This plow was made of interchangeable parts and was an important development in farming technology.Learn More
The earliest known use of crutches dates back to the early days of recorded history, so it is impossible to pinpoint a single inventor. However, several innovators are responsible for the modern crutch design.Full Answer >
The exact year that the first optical laser was invented is disputed, but it is generally agreed that it was either 1958 or 1960. Gordon Gould of Columbia University built the first laser in 1958, but the technology was not patented until 1960 by Theodore Maiman of Hughes Laboratories.Full Answer >
The fifth-generation computer was a project spearheaded by Japan in order to move ahead of Western computer technology. The plan was to overhaul computer technology and create their own.Full Answer >
Tycho Brahe was an astronomer who, through careful observation, recorded and discovered the visible orbit of heavenly bodies across the night sky. Brahe is also credited with providing data that disproved the early 16th-century theory that the heavens are static.Full Answer >