The total installed electricity capacity in public utilities in 1992 in India was 69,100 megawatts, of which 70 percent was thermal, 27 percent hydropower, and 3 percent nuclear.Now it has doubled it.
An early development leading to the establishment of blood banks occurred in 1915. By the mid-1930s, the Soviet Union had set up a system of at least sixty large blood centers and more than 500 subsidiary ones, all storing "canned" blood and shipping it to all corners of the country.
Hearses were originally horse-drawn, but silent electric motorised examples that were used in Paris were reported in the pages of Scientific American May 1907.
John Loudon McAdam (1756-1836) designed the first modern highways. He developed an inexpensive paving material of soil and stone aggregate (known as macadam).
The technique of purification of drinking water by use of compressed liquefied chlorine gas was developed in 1910 by U.S. Army Major (later Brig. Gen.) Carl Rogers Darnall (1867-1941).
Early Rome had indoor plumbing, meaning a system of aqueducts and pipes that terminated in homes and at public wells and fountains for people to use.
Sir Humphry Davy (1778-1829) was an English scientist who invented the first electric light in 1800. He experimented with electricity and invented an electric battery.