Distinguished Inventors of 19th century

  JAMES GLAISHER(1809-1903)  

was an English meteorologist, during the 19th century, took great risks when they ascended to extraordinary heights to discover more about the atmosphere. GLAISHER went to almost 12 km(7.5 miles) into the troposphere without oxygen or protective clothing.Such a research led to the discovery that air becomes cooler with altitude.

 FERDINAND Von  ZEPPELIN(1838-1917)

In 1900, he devised  the first airship, a 128-m(420-ft) rigid craft named the LZ1. During  World War I , some 100 Zeppelins were built for military use.

 FRITZ HABER(1868-1934)

was an German chemist, who developed a process for making the alkali ammonia in 1908, which is used to make fertilizers and explosives. The Haber process involves reacting nitrogen from the air 

with hydrogen at high temperature and pressure, later on he devised a way of making nitric acid by heating ammonia in air.

 LINUS PAULING(1901-1994) 

was an American chemist,who won 1954 Nobel Prize for Chemistry for his work on chemical bonds and the structure of molecules.He calculated the energies needed to make a bonds,the angles at which bond forms and the distance between the atoms. He also won the 1962 Nobel Peace Prize for his efforts to stop the testing of nuclear weapons.