Dr. Gary Greenberg, Stacy Keach's A Grain of Sand: Nature's Secret Wonder PDF

By Dr. Gary Greenberg, Stacy Keach

ISBN-10: 0760331987

ISBN-13: 9780760331989

Потрясающие трёхмерные микрофотографии песчинок обычного пляжного песка. listed here are the sands of Hawaii and Tahiti, the Sahara and the Poles, a volcano, each one exquisitely various, and every telling a desirable geological tale. crimson sand and yellow, white sand and black, making a song sand and quicksand: Greenbergs photos display the delicate variations of their shades, textures, sizes, and shapes. And as this infinitesimal global unfolds so does an exciting clarification of ways every one grain of sand starts and kinds and unearths itself in a selected position, one in every of 1000000000 and distinctive. Вот тот мир, рассматривать в песчинку, благодаря потрясающей трехмерной микрофотографии доктор Гари Гринберг. В какой-то, весь песок выглядит так - бесчисленное зерен в обширном пространстве пляжа. Присмотритесь - гораздо ближе - и ваш взгляд на песке никогда не будет то же самое. Используя фантастические microphotographic методы, которые он разработал, Гринберг приглашает читателей поймет странный и прекрасный мир, что каждая песчинка содержит. Вот песках Гавайев и Таити, Сахары и поляки, вулкан, изысканно каждого разные, и каждая рассказывает увлекательную геологической истории. Красный и желтый песок, белый песок и черный, пение песка и зыбучие пески: Greenbergs фотографий выявить тонкие различия в их цвета, фактур, размеров и форм. И так как это бесконечно малая мире разворачивается так же интригующий объяснение того, как каждая песчинка начинается и форм и оказывается в определенном месте, одна из миллиардов и единственный в своем роде.

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Additional resources for A Grain of Sand: Nature's Secret Wonder

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Instances of the colors being "not natural" can be seen in images where I've employed crossed polarizing filters. Polarizing filters only pass light that is vibrating in one particular plane (such as up and down) and they block light that is vibrating in all other planes (such as right and left). Two of these filters can be used in such a way that the first filter illuminates the sand grains with polarized light, and the second filter analyzes the path the light takes as it travels through the sand grains.

Habitat for a large variety of marine life, which is reflected in the bits and pieces that make their way to nearby beaches. The life forms that inhabit the reefs sequester carbon dioxide from the atmosphere and recycle it into their calcium carbonate shells. Human intervention has significantly reduced the number of these marine organisms, causing the levels of atmospheric carbon dioxide to increase and global warming to worsen. This is taking place at an increasing speed, and the health of coral reefs throughout the world is decreasing at an alarming rate.

Biogenic sand forms from the broken bits and pieces of the skeletons of marine life, such as shells, corals, sea urchins, sponges, fish bones, shellfish, starfish, sand dollars, and snails. In addition, beach sand can contain the magnificent skeletons of microscopic organisms. It is amazing how these delicate, minuscule forms of life survive the ravages and torrents of the surf. Some of these shelled creatures are so small that they're invisible to the naked eye. The oceans are filled with tiny, single-celled, amoeboid protists called foraminifera, or forams.

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A Grain of Sand: Nature's Secret Wonder by Dr. Gary Greenberg, Stacy Keach


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