Suchergebnisse
Suchergebnisse:
Vor 2 Tagen · The standard chemical symbol for antimony (Sb) is credited to Jöns Jakob Berzelius, who derived the abbreviation from stibium. [54] The ancient words for antimony mostly have, as their chief meaning, kohl , the sulfide of antimony.
Vor 4 Tagen · From its discovery in 1803 by Jöns Jakob Berzelius and Wilhelm Hisinger to its modern-day uses in catalytic converters, glass polishing, and even as a crucial component in lighter flints, cerium has left an indelible mark on various industries and scientific endeavors.
Vor einem Tag · Thorium was discovered in 1828 by the Norwegian amateur mineralogist Morten Thrane Esmark and identified by the Swedish chemist Jöns Jacob Berzelius, who named it after Thor, the Norse god of thunder. Its first applications were developed in the late 19th century.
Vor 3 Tagen · Amorphous elemental silicon was first isolated and described as an element in 1824 by Jöns Jacob Berzelius, a Swedish chemist. Impure silicon had already been obtained in 1811. Crystalline elemental silicon was not prepared until 1854, when it was obtained as a product of electrolysis.
Vor 2 Tagen · Das chemische Symbol As wurde 1814 von Jöns Jacob Berzelius (1779–1848) vorgeschlagen. Der Ursprung des Namens Arsen ist unklar. Er geht entweder auf die griechische Bezeichnung Arsenikon zurück, die von dem griechischen Arzt und Pharmazeuten Dioskurides (lebte im 1. Jh. n. Chr.) erstmals für das Arsen-Mineral Auripigment (As2S3 ...
2. Mai 2024 · Ein Jakobsstab (lateinisch baculus Jacobi ), auch Gradstock oder Kreuzstab, ist ein früheres astronomisches Instrument zur Winkelmessung und zur mittelbaren Streckenmessung. Es wurde vor allem in der Seefahrt, aber auch in der Landvermessung und Astronomie verwendet.
Vor 2 Tagen · atom, the basic building block of all matter and chemistry. Atoms can combine with other atoms to form molecules but cannot be divided into smaller parts by ordinary chemical processes. Most of the atom is empty space. The rest consists of three basic types of subatomic particles: protons, neutrons, and electrons.
