On the HeavensAeterna Press, 1969 On the Heavens (Greek: Περὶ οὐρανοῦ, Latin: De Caelo or De Caelo et Mundo) is Aristotle’s chief cosmological treatise: written in 350 BC it contains his astronomical theory and his ideas on the concrete workings of the terrestrial world. It should not be confused with the spurious work On the Universe (De mundo, also known as On the Cosmos). |
מהדורות אחרות - הצג הכל
מונחים וביטויים נפוצים
absolutely heavy absolutely light absurd aither Anaxagoras argument Aristotle assert atomic bodies move capable cause centre circle circular motion circular movement clearly composed contains contrary Democritus destructible difference distance distinction divisible downward movement elementary bodies elements Empedocles endowed with weight equal eternal everything exist explain fact figure finite line fire follows further goal greater heaven heavier heavy and light heavy body heavy thing Hence Heraclitus of Ephesus homoeomerous impossible indestructible infinite body infinite weight infinity instance intermediate kind Leucippus light and heavy lighter magnitude mass matter mean move naturally moved by constraint moves downward moves upward natural body natural movement necessarily observation planes possesses weight possible primary body principles produce proper motion pyramid Pythagoreans quantity radii reason rectilinear rest sense shape similarly simple body solid sphere spherical stars straight substance suppose surface theory Timaeus ungenerated universe unnatural upward movement void whole