The diamond and the boy : the rock cycle of graphite & the life of H. Tracy Hall
by Holt, Hannah (Author)
Summary
Before a diamond is a gem, it<U+2019>s a common gray rock called graphite. Through an intense trial of heat and pressure, it changes into one of the most valuable stones in the world. Before Tracy Hall was an inventor, he was a boy, born into poverty, bullied by peers, forced to work at an early age... Full description
Summary: |
Before a diamond is a gem, it<U+2019>s a common gray rock called graphite. Through an intense trial of heat and pressure, it changes into one of the most valuable stones in the world. Before Tracy Hall was an inventor, he was a boy, born into poverty, bullied by peers, forced to work at an early age. However, through education and experimentation, he became one of the brightest innovators of the twentieth century, eventually building a revolutionary machine that makes diamonds. |
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Physical Description: |
pages ; cm |
Audience: |
Ages 4-8. Grades K to 3. |
Bibliography: |
Includes bibliographical references. |
ISBN: |
9780062659033 0062659030 |