Analysis of information sources in references of the Wikipedia article "History of gravitational theory" in English language version.
Any solid lighter than a fluid will, if placed in the fluid, be so far immersed that the weight of the solid will be equal to the weight of the fluid displaced.
For example, in his lost books On Lightness and Heaviness and On Motion, Strato abandoned the doctrine of 'natural places' in exchange for a more mechanical view of why some objects rise and others fall
If someone drops a rock [from] a finger's height above the ground, it certainly won't make a visible impact on the ground, but if someone drops it holding it a hundred feet or more, it will have a strong impact. And there is no other reason for that impact. Because it does not have greater weight, nor is it impelled by greater force; but it moves faster.
Hipparchus rejected the Aristotlian physics of motion and followed Strato in embracing an early impetus theory
Plutarch also attests to the existence of Roman philosophers and astronomers who rejected Aristotelian dynamics and were engaging sophisticated debates on the subject, even contemplating theories of inertia and universal gravitation
Empedocles also posits two opposing forces in an eternal tug-of-war as the energy which causes the roots to move about in the first place. These are 'Love' (also referred to as Aphrodite, Cypris, or Harmony) and 'Strife' (also referred to as Anger, Wrath, or Discord), the former named so for its unifying nature, the latter for its destructive. Under the influence of Love, the roots are 'glued' and 'fitted' together, while under Strife they are torn apart. To equate this to something more relatable, here we might think about the roles of gravity and dark energy in modern physical cosmology.
{{cite book}}: CS1 maint: location missing publisher (link)Der englische Physiker und Nobelpreisträger Dirac hat ... vor über dreißig Jahren die Vermutung begründet, dass sich das universelle Maß der Schwerkraft im Laufe der Geschichte des Universums außerordentlich langsam, aber stetig verringert." English: "The English physicist and Nobel laureate Dirac has ..., more than thirty years ago, substantiated the assumption that the universal strength of gravity decreases very slowly, but steadily over the course of the history of the universe.
Empedocles also posits two opposing forces in an eternal tug-of-war as the energy which causes the roots to move about in the first place. These are 'Love' (also referred to as Aphrodite, Cypris, or Harmony) and 'Strife' (also referred to as Anger, Wrath, or Discord), the former named so for its unifying nature, the latter for its destructive. Under the influence of Love, the roots are 'glued' and 'fitted' together, while under Strife they are torn apart. To equate this to something more relatable, here we might think about the roles of gravity and dark energy in modern physical cosmology.
Empedocles also posits two opposing forces in an eternal tug-of-war as the energy which causes the roots to move about in the first place. These are 'Love' (also referred to as Aphrodite, Cypris, or Harmony) and 'Strife' (also referred to as Anger, Wrath, or Discord), the former named so for its unifying nature, the latter for its destructive. Under the influence of Love, the roots are 'glued' and 'fitted' together, while under Strife they are torn apart. To equate this to something more relatable, here we might think about the roles of gravity and dark energy in modern physical cosmology.