Christian Friedrich Schönbein

Christian Friedrich Schönbein was a German-Swiss chemist. He lived from 18 October 1799 to 29 August 1868. He made important discoveries that helped change science.

One of his biggest achievements was inventing the fuel cell in 1838. He did this work at the same time as another scientist named William Robert Grove. Fuel cells are special machines that change chemical energy into electricity without burning fuel. They are still important today.

Schönbein also discovered two powerful substances: guncotton and ozone. Guncotton can burn very quickly, and ozone is a form of oxygen that helps protect the Earth.

In addition to these discoveries, Schönbein introduced the idea of geochemistry in 1838. Geochemistry is the study of how chemicals behave in the Earth and its rocks. It helps us understand our planet better.

Life

Christian Friedrich Schönbein was born in Metzingen in the Duchy of Württemberg. When he was 13, he started learning about chemicals at a company in Böblingen. He studied on his own and later passed a chemistry test from a professor at Tübingen. He moved to different universities before joining the University of Basel in 1828. He became a full professor there in 1835. He worked at the university until he died in 1868 and was buried in Basel.

Fuel cell

In 1839, Schönbein told others about the fuel cell in a science journal named "Philosophical Magazine". This helped people learn how to make energy from simple things.

Ozone

While working with water at the University of Basel, Schönbein noticed a special smell in his lab. This smell helped him discover a new gas. He named it "ozone" from a Greek word meaning "to smell." He shared his findings in 1840. Later, he learned that this same smell is found near lightning storms, showing that ozone is in the air during such events.

Explosives

Schönbein sometimes did experiments at home, even though his wife asked him not to. One day in 1845, while his wife was away, he spilled a mix of nitric acid and sulfuric acid on her cotton apron. When he hung the apron up to dry, it caught fire by itself and burned very fast. This happened because the apron had turned into a special material called nitrocellulose.

Schönbein thought this new material could be useful. Unlike old gunpowder, nitrocellulose could burn cleaner. It was later named guncotton. It took many years for scientists to make it safe for use, but it became important for making better explosives.

Legacy

In 1990, a special star-shaped rock in space was named after him.

Selected writings

• The Letters of Faraday and Schönbein 1836-1862 London: Williams & Norgate 1900.