Let the reader reconstruct the inference
Sagan poses the contrasting shadow observations before walking through curvature and a circumference calculation.
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CosmosCarl Sagan · 70 weeks“two vertical sticks of equal length…”
Carl Sagan, Cosmos. Chapter I, “The Shores of the Cosmic Ocean”. Supplied local book text; edition metadata not verified for this preview. Research locator: U1-P036.
Sagan poses the contrasting shadow observations before walking through curvature and a circumference calculation.
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Carl Sagan, Cosmos. Chapter I, “The Shores of the Cosmic Ocean”. Supplied local book text; edition metadata not verified for this preview. Research locator: U1-P036.. Exact source words are separate from the editorial annotations on this page.
SHA-256: ba31eb084c56abb5cfc86832caa36b91a7dca25fbaa8bfe6c481c7ccad1d3b29
Supplied local book text; edition metadata not verified for this preview