
Anmerkungen zur Transkription:
This volume invites listeners on a concise tour through the deep past of our planet, beginning with the ways historians and geologists count time. It explains how layers of rock, fossilized soil, and ancient rivers serve as natural clocks, and shows how scholars move from written records of early civilizations to the silent clues left by glaciers, caves and buried seas. The first part sets the stage by contrasting human chronologies with the immense stretches uncovered in the earth’s strata.
The second half turns to the tools that let scientists put numbers on those ages: the buildup of coal and oil, the retreat of ice sheets, and the breakthrough of radioactive decay. With clear illustrations of radium’s discovery, uranium’s decay chains, and practical radio‑isotope methods, the book lays out a reliable framework for measuring eons. Listeners come away with a grounded appreciation of how the planet’s timeline is built, and why those ancient numbers matter for understanding humanity’s place in Earth’s story.
Language
de
Duration
~2 hours (167K characters)
Publisher of text edition
Project Gutenberg
Original publisher
Germany: Kosmos, Gesellschaft der Naturfreunde (Franck'sche Verlagshandlung),1922.
Credits
Franz L Kuhlmann and the Online Distributed Proofreading Team at https://www.pgdp.net
Release date
2022-06-07
Rights
Public domain in the USA.
Subjects
1887–1951
A German biologist and schoolbook writer, he is best remembered today for explaining big scientific ideas in a clear, approachable way. His surviving work on Earth’s deep past offers a compact window into how early 20th-century science was shared with general readers.
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