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A symbol invented by John Dee, alchemist and astrologer at the court of Elizabeth I of England. It represents (from top to bottom): the moon; the sun; the elements; and fire. Ouroboros: Ancient Egypt and Persia, Norse mythology: A serpent or dragon consuming its own tail, it is a symbol of infinity, unity, and the cycle of death and rebirth ...
Alchemical symbols were used to denote chemical elements and compounds, as well as alchemical apparatus and processes, until the 18th century. Although notation was partly standardized, style and symbol varied between alchemists. Lüdy-Tenger [1] published an inventory of 3,695 symbols and variants, and that was not exhaustive, omitting for ...
Hephaestus (UK: / h ɪ ˈ f iː s t ə s / hif-EE-stəs, US: / h ɪ ˈ f ɛ s t ə s / hif-EST-əs; eight spellings; Greek: Ἥφαιστος, translit. Hḗphaistos) is the Greek god of artisans, blacksmiths, carpenters, craftsmen, fire, metallurgy, metalworking, sculpture and volcanoes. [1]
NFPA 704 safety squares on containers of ethyl alcohol and acetone. " NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response " is a standard maintained by the U.S. -based National Fire Protection Association. First "tentatively adopted as a guide" in 1960, [1] and revised several times since then, it ...
Alchemical Symbols is a Unicode block containing symbols for chemicals and substances used in ancient and medieval alchemy texts. Many of the symbols are duplicates or redundant with previous characters. [3] Few fonts support more than a few characters in this block as of 2021. One that does and is free for personal use is Symbola 14.0.
In Chinese philosophy, fire (Chinese: 火; pinyin: huǒ) is the second phase of Wu Xing. Fire is yang in character. Its motion is expanded and its energy is fermenting, ripening and convective. [1] Fire is associated with Summer, the South in the northern hemisphere and North in the Southern hemisphere and the planet Mars, the color red ...
Hazard symbols are recognizable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electromagnetic fields, electric currents; harsh, toxic or unstable chemicals (acids, poisons, explosives); and radioactivity. The use of hazard symbols is often regulated by law and directed by standards ...
41 of the 118 known elements have names associated with, or specifically named for, places around the world or among astronomical objects. 32 of these have names tied to the places on Earth, and the other nine are named after to Solar System objects: helium for the Sun; tellurium for the Earth; selenium for the Moon; mercury (indirectly), uranium, neptunium and plutonium after their respective ...