USQ

U

(obvious)

S

(obvious)

Q

Quadrivium (latin)

Arithmetic
Geometry
Music
Astronomy (astrology)

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)

Fortran course

Quantum mechanics

Planck constant h = 6.626 × 10^-34 J s

E = h v

Quattrocento (italian)

The 15^th century (1401 - 1500 or 1400 - 1499) in italy (mature Renaissance).

Quintessence (latin: quinta essentia, 5th element besides fire, water, air, earth)

Quisisana (italian)

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.

Quodlibet (latin)

Q

Symbol for heat in thermodynamics.

First law: dU = dW + dQ. Second law: dS = dQ_rev/T; dS >= 0. Third law: www.nernst.de.

Symbol for electric charge.

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Revised 2009-05-17