Letters on Different Subjects in Natural Philosophy, Volume 1 (Letters to a German Princess): Free Audiobook and Listening Guide

Letters on Different Subjects in Natural Philosophy, Volume 1 (Letters to a German Princess), credited to Leonhard Euler, is available as a LibriVox volunteer audiobook. This guide identifies the recording, its source summary and its audio tracks.

About the work

The LibriVox catalogue summary, preserved with the recording, reads:

LibriVox recording of Letters on Different Subjects in Natural Philosophy, Volume 1 (Letters to a German Princess) by Leonhard Euler. (Translated by Henry Hunter.) Read in English by LibriVox Volunteers. The Letters of Euler to a German Princess have acquired over all Europe a celebrity to which the reputation of the Author, the choice and importance of the several subjects, and the clearness of elucidation justly entitle them. They have deservedly been considered as a treasury of science, adapted to the purposes of every common seminary of learning. They may be studied to advantage without much previous elementary knowledge; they convey accurate ideas respecting a variety of objects, highly interesting in themselves, or calculated to excite a laudable curiosity; they inspire a proper taste for the sciences, and for that sound philosophy which, supported by science, and never losing sight of her cautious, steady, methodical advances, runs no risk of perplexing or misleading the attentive student. - Summary by Nicolas de Condorcet

Recording facts

• Recording title: Letters on Different Subjects in Natural Philosophy, Volume 1 (Letters to a German Princess)
• Author credits: Leonhard Euler
• Language: English
• Original MP3 tracks: 115
• Listed recording duration: 14:08:24

Catalogue topics

• philosophy
• mathematics
• physics
• logic
• astronomy

Opening tracks: first 24 of 115

1. 001 - Of Magnitude, or Extension — 7:47
2. 002 - Of Velocity — 7:07
3. 003 - Of Sound, and Its Velocity — 7:52
4. 004 - Of Consonance and Dissonance — 6:28
5. 005 - Of Unison and Octaves — 8:10
6. 006 - Of Other Consonances — 9:14
7. 007 - Of the Twelve Tones of the Harpsichord — 13:19
8. 008 - Of the Pleasure Derived from Fine Music — 5:55
9. 009 - Compression of the Air — 7:23
10. 010 - Rarefaction and Elasticity of the Air — 8:16
11. 011 - Gravity of the Air — 7:01
12. 012 - Of the Atmosphere, and the Barometer — 6:18
13. 013 - Of Air-Guns, and the Compression of Air in Gunpowder — 6:43
14. 014 - The Effect Produced by Heat and Cold on All Bodies, and Of, the Pyrometer and Thermometer — 5:31
15. 015 - Changes Produced in the Atmosphere by Heat and Cold — 7:48
16. 016 - The Cold Felt on High Mountains and at Great Depths Accounted For — 7:25
17. 017 - Of Light, and the Systems of Descartes and Newton — 6:54
18. 018 - Difficulties Attending the System of Emanation — 6:36
19. 019 - A Different System Respecting the Nature of Rays and of Light Proposed — 7:31
20. 020 - Of the Propagation of Light — 6:42
21. 021 - Digression on the Distances of the Heavenly Bodies, and on the Nature of the Sun and His Rays — 6:15
22. 022 - Elucidations on the Nature of Luminous Bodies, and Their Difference from Opaque Bodies Illuminated — 7:16
23. 023 - How Opaque Bodies Become Visible Newton's System of the Reflection of Rays Proposed — 8:34
24. 024 - Examination and Refutation of Newton's System — 11:36

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Source and rights

This is a record from LibriVox's official Internet Archive collection, with a public-domain licence recorded in its metadata. LibriVox's policy includes its catalogue summaries as well as its recordings. Its public-domain assessment follows United States law; copyright status can differ elsewhere. The summary and track facts are reproduced and reformatted from that record. Dates attached to the archive upload are not treated as original book publication dates.