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Philosopher's stone. The Alchymist, in Search of the Philosopher's Stone by Joseph Wright of Derby, 1771. The philosopher's stone[a] is a mythic alchemical substance capable of turning base metals such as mercury into gold or silver [b]; it was also known as "the tincture" and "the powder". Alchemists additionally believed that it could be used ...
Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script. For a far more comprehensive list of symbols and signs, see List of Unicode characters.
Eagle of Zeus. Zeus and an eagle, krater (c. 560 BC), now in the Louvre. Ptolemaic tetradrachm with the Eagle of Zeus, standing on a thunderbolt, on the obverse. The Eagle of Zeus (Ancient Greek: ἀετός Διός, romanized: aetos Dios) was one of the chief attributes and personifications of Zeus, the head of the Olympian pantheon.
Ampersand: the sign &; the name being a corruption of 'and per se = and'; i.e. ' & by itself = and'. The sign derives from the scribes' ligature for the Latin: et; in certain italic versions, the letters e and t are clearly distinguishable.
propositional logic, Boolean algebra, first-order logic. ⊥ {\displaystyle \bot } denotes a proposition that is always false. The symbol ⊥ may also refer to perpendicular lines. The proposition. ⊥ ∧ P {\displaystyle \bot \wedge P} is always false since at least one of the two is unconditionally false. ∀.
According to the principle of acrophony, the letter A originated from the Proto-Sinaitic alphabet as a symbol representing the head of an ox or cow (aleph), its orientation and original meaning having been lost over time. The turned A symbol restores the letter to a more easily recognizable logographic representation of an ox's head.
Hazard symbols; List of mathematical constants (typically letters and compound symbols) Glossary of mathematical symbols; List of physical constants (typically letters and compound symbols) List of common physics notations (typically letters used as variable names in equations) Rod of Asclepius / Caduceus as a symbol of medicine
Similar wheel symbols were used as a solar symbol by the Ancient Egyptians. [32] Some Buddha statues also depict the related Dharmachakra Mudrā, a hand sign depicting the turning of the Dharma wheel. A very similar wheel symbol also appears in the flag of the Romani people, hinting to their nomadic history.