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The Invisible Pyramid: A Library of America eBook Classic

by Loren Eiseley William Cronon

To read Loren Eiseley is to renew a sense of wonder at the miracles and paradoxes of evolution and the ever-changing diversity of life. In this brilliant collection he considers the cosmological significance and ultimate meanings of our evolutionary history, offering a series of profound, lyrical meditations on the origins and possible futures of humankind against the backdrop of the Apollo landings. As Western civilization attains new heights of scientific awareness and technological skill, he asks, is it also blind to its own limits and destructive capacities? Always a fond observer of the natural world, Eiseley makes a newly urgent, environmentalist plea in The Invisible Pyramid: we must protect the fragile "world island" against our unchecked power to pollute and consume it.

The Invisible Pyramid

by Loren C. Eiseley

This collection of essays, first published shortly after Americans landed on the moon, explores inner and outer space, the vastness of the cosmos, and the limits of what can be known.

James Nasmyth: Engineer - an Autobiography

by Samuel Smiles James Nasmyth

Autobiography of the mechanical inventor

Lectures on Evolution

by Thomas Henry Huxley

Thomas Henry Huxley was popularly known as "Darwin's Bulldog," and that's because the 19th century scientist was a forceful advocate for Darwin's theory of evolution. Huxley himself also wrote at length on the topic.

Light

by R. W. Ditchburn

This classic study, available for the first time in paperback, clearly demonstrates how quantum theory is a natural development of wave theory, and how these two theories, once thought to be irreconcilable, together comprise a single valid theory of light. Aimed at students with an intermediate-level knowledge of physics, the book first offers a historical introduction to the subject, then covers topics such as wave theory, interference, diffraction, Huygens' Principle, Fermat's Principle, and the accuracy of optical measurements. Additional topics include the velocity of light, relativistic optics, polarized light, electromagnetic theory, and the quantum theory of radiation. The more difficult mathematics has been placed in appendixes, or in separated paragraphs in small type, intended to be omitted on first reading. Examples and/or references follow each chapter to assist the student in absorbing the material and to suggest additional resources.

The Malay Archipelago: A Travel Narrative

by Alfred Russel Wallace

Written by a famed 19th-century scientist who laid the groundwork for much of modern biology, this influential work remains one of the great classics of natural history and travel. Detailing his eight-year exploration of the Malay Archipelago, Wallace offers observations of the native people of the island groupings, the abundant and strange animals and insects, and more.

Natural Sciences Grade 4

by Siyavula

An open source textbook for South Africa.

Natural Sciences Grade 5

by Siyavula

An open source textbook for South Africa.

Natural Sciences Grade 6

by Siyavula

An open source textbook for South Africa.

Natural Sciences Grade 7

by Siyavula

An open source textbook for South Africa.

Natural Sciences Grade 8

by Siyavula

An open source textbook for South Africa.

Natural Sciences Grade 9

by Siyavula

An open source textbook for South Africa.

Natuurwetenskappe Graad 6

by Siyavula

A South African textbook.

Natuurwetenskappe Graad 7

by Siyavula

A South African textbook.

Natuurwetenskappe Graad 8

by Siyavula

A South African textbook.

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