Adolf Ferdinand Weinhold (19 May 1841 – 1 July 1917) was a German

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe th ...

physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...

and

inventor An invention is a unique or novel device, method, composition, idea or process. An invention may be an improvement upon a machine, product, or process for increasing efficiency or lowering cost. It may also be an entirely new concept. If an ...

Life

From 1857 to 1861 Weinhold studied chemistry and physics at universities in

Göttingen Göttingen (, , ; nds, Chöttingen) is a college town, university city in Lower Saxony, central Germany, the Capital (political), capital of Göttingen (district), the eponymous district. The River Leine runs through it. At the end of 2019, t ...

and in

Leipzig Leipzig ( , ; Upper Saxon: ) is the most populous city in the German state of Saxony. Leipzig's population of 605,407 inhabitants (1.1 million in the larger urban zone) as of 2021 places the city as Germany's eighth most populous, as wel ...

. His mentors were

Otto Linné Erdmann Otto Linné Erdmann (11 April 1804 – 9 October 1869) was a German chemist. He was the son of Karl Gottfried Erdmann, the physician who introduced vaccination into Saxony. He was born in Dresden on 11 April 1804. In 1820 he began to attend the ...

and

Friedrich Wöhler Friedrich Wöhler () FRS(For) HonFRSE (31 July 180023 September 1882) was a German chemist known for his work in inorganic chemistry, being the first to isolate the chemical elements beryllium and yttrium in pure metallic form. He was the firs ...

. In Germany, Weinhold worked after university studies as chemist and physician. He was appointed professor at

Chemnitz University of Technology Chemnitz (; from 1953 to 1990: Karl-Marx-Stadt , ) is the third-largest city in the German state of Saxony after Leipzig and Dresden. It is the 28th largest city of Germany as well as the fourth largest city in the area of former East Germany a ...

in 1870. In 1873 he was granted a D. Phil from the

University of Leipzig Leipzig University (german: Universität Leipzig), in Leipzig in Saxony, Germany, is one of the world's oldest universities and the second-oldest university (by consecutive years of existence) in Germany. The university was founded on 2 Decemb ...

. In 1881, he applied the

vacuum flask A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings. Invented by Sir James Dewa ...

James Dewar Sir James Dewar (20 September 1842 – 27 March 1923) was a British chemist and physicist. He is best known for his invention of the vacuum flask, which he used in conjunction with research into the liquefaction of gases. He also studied ato ...

to chemistry, using it as a

cold trap In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases into a liquid or solid. The most common objective is to prevent vapors being evacuated from an experiment from entering a vacuum pump where they ...

. The flask itself was patented in 1903 by the

glassblower Glassblowing is a glassforming technique that involves inflating molten glass into a bubble (or parison) with the aid of a blowpipe (or blow tube). A person who blows glass is called a ''glassblower'', ''glassmith'', or ''gaffer''. A '' lampworke ...

, who founded Thermos GmbH on its basis.Deutschen Reichspatent 170057 of 1 October 1903

Works by Weinhold

* ''Leitfaden für den physikalischen Unterricht'' (24 editions) * ''Physikalische Demonstrationen – Anleitung zum Experimentieren im Unterricht an Gymnasien, Realschulen und Gewerbschulen'' (7 editions) * ''Vorschule der Experimentalphysik – Naturlehre in elementarer Darstellung nebst Anleitung zur Ausfertigung der Apparate'' (5 editions) *

References

External links

*
Chemnitz University of Technology:Life and works of Weinhold
* 1841 births 1917 deaths People from Zwenkau People from the Kingdom of Saxony 19th-century German chemists {{Germany-chemist-stub