Septem artes liberales (seven liberal arts), curriculum
Trivium (cf. trivial): Grammar, Rhetoric, Dialectic (Logic)
Magic numbers: 32 + 42 = 52
Early universities: Bologna (founded in 1088), Padova (founded in 1222)
Planck constant h = 6.626 × 10-34 J s
E = h v
The 15th century (1401 - 1500 or 1400 - 1499) in italy (mature Renaissance).
Quintessence (latin: quinta essentia, 5th element besides fire, water, air, earth)
Lago di Como (Lario): Villa Vigoni
Ravello: Villa Cimbrone (Belvedere), Villa Palumbo, Villa Rufolo
Quisquilien (latin, german)
Quod erat demonstrandum (q.e.d., latin)
The Natural Numbers [1, 2, 3, ...]. The Peano axioms.
Symbol for heat in thermodynamics.
First law: dU = dW + dQ. Second law: dS = dQrev/T; dS >= 0. Third law: www.nernst.de.
Symbol for electric charge.
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