Combining Texts

All the ideas for 'Locke on Essences and Kinds', 'Hat-Tricks and Heaps' and 'On the Conservation of Force'

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7 ideas

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / b. The Heap paradox ('Sorites')

9117	The smallest heap has four objects: three on the bottom, one on the top [Hart,WD, by Sorensen]

9. Objects / D. Essence of Objects / 13. Nominal Essence

15642

If kinds depend only on what can be observed, many underlying essences might produce the same kind [Eagle]

15645

Nominal essence are the observable properties of things [Eagle]

15643

Nominal essence mistakenly gives equal weight to all underlying properties that produce appearances [Eagle]

26. Natural Theory / B. Natural Kinds / 4. Source of Kinds

15641

Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle]

27. Natural Reality / A. Classical Physics / 2. Thermodynamics / a. Energy

20646

Helmholtz used 'energy' to mathematically link heat, light, electricity and magnetism [Helmholtz, by Watson]

27. Natural Reality / A. Classical Physics / 2. Thermodynamics / c. Conservation of energy

20973

All forces conserve the sum of kinetic and potential energy [Helmholtz, by Papineau]