Showing posts with label scientific philately. Show all posts
Showing posts with label scientific philately. Show all posts

Sunday, 15 August 2021

Sweden Honors Chemist Scheele with Commemorative Stamp

Swedish postage stamp commemorating Carl Wilhelm Scheele’s 200th birthday, honoring his discoveries in light-sensitive silver compounds and chemistry.
Yayınlanma tarihi : 09/12/1942 İsveç
Alman-İsveç vatandaşı olan kimyager Carl Wilhelm Scheele'nin (1742-1786) doğumunun 200.yıldönümü ansına çıkarılmış iki adet pul.Kimyager ışıkta gümüş florürün kararması üzerinde çalışmış ayrıca oksijen,molibden,tungsten,klor,lakrit asit  gibi elementleri ve kimyasalları  keşfetmiştir.

Date of issue : 09/12/1942 Sweden
Stamp issued to honor 200th anniversary of birth of Carl Wilhelm Scheele (1742-1786) German-Swedish chemist.He investigated the phenomenon of silver chloride blackening in the light. Also, he discovered oxygen, molybdenum,tungsten,uric,lactic,citric,hyrofluoric.