
Dive into the enigmatic world of antimatter with physicist Frank Close, who demystifies this elusive substance powering PET scans and challenging our understanding of the universe. Beyond sci-fi myths like those in "Angels and Demons," discover the fascinating reality of matter's mirror image.
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Imagine a substance so powerful that a gram could power an entire city for a year, yet so dangerous it annihilates everything it touches in a flash of pure energy. This isn't science fiction - it's antimatter, the mysterious opposite of everything we know. When matter meets antimatter, they mutually annihilate, converting their entire mass into pure light according to Einstein's E=mc2. While antimatter features prominently in Star Trek and Dan Brown's "Angels and Demons," the scientific reality is both more mundane and more wondrous than fiction suggests. Antimatter isn't just theoretical - it's produced regularly at CERN and has inspired NASA research into advanced propulsion systems. At the subatomic level, antimatter reveals itself as matter's perfect mirror image. Where electrons carry negative charge, their antimatter counterparts (positrons) carry positive charge. Protons become antiprotons with negative instead of positive charge. This symmetry extends throughout the particle zoo - every matter particle has an antimatter twin with identical mass but opposite charge. The energy released when matter meets antimatter is unmatched by anything else in nature. Chemical reactions release only about one-billionth of the available energy in matter, and nuclear reactions like those in atomic bombs liberate about one percent. Antimatter annihilation releases 100% of the available energy. A kilogram of antimatter meeting a kilogram of matter would generate energy equivalent to about 43 million tons of TNT - enough to power an entire country for months. Unlike fictional doomsday weapons, antimatter's destructive potential is self-limiting - it destroys itself in the process of destroying matter, preventing chain reactions.
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