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The Marvel That is Carbon
Kirt's Cogitations™ #120

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The Marvel That is Carbon

How can graphite and diamond be so different if they are both composed of pure carbon? A diamond is clear and hard and abrasive, while graphite is opaque and slippery. Diamond atoms are arranged as a tetrahedral, whereby each carbon attaches 3-dimensionally to three others. This accounts for its tremendous strength (diamond can scratch all other materials). In comparison, carbon atoms are arranged in layers with two kinds of bonds. Three are bonded with other carbon atoms at the corner of a hexagon, forming a 2-D chicken wire planar array. The layers then are held together weakly with the other bond. The third form of carbon, the Buckyball, was covered a while back in a Factoid, but don't expect to find one often in nature. While marveling at carbon, keep in mind that all living things are carbon-based.

A huge collection of my 'Factoids' can be accessed from my 'Kirt's Cogitations' table of contents.

Topical Smorgasbord, another manifestation of Factoids, are be found on these pages:

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 |

All pertain to topics that are related to the general engineering and science theme of RF Cafe.

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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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