Money’s invisible secrets
United States paper currency has many security measures, including special paper, watermarks, and metallic printing. It includes physical qualities that can only be seen under certain light frequencies.
From left to right in the above photo, currency is shown in the ultraviolet, visible, and infrared light ranges.
Some counterfeits involve bleaching the lower denominations (say $1 bills) and printing on them higher denomination graphics (say $20), and the above-shown markers identify these counterfeits.
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Mathew Brady
Now considered one of the giants and groundbreaking visionaries in the history of photography, American Mathew Brady died penniless in 1896 in a hospital's charity ward. He invested his life savings in documenting the American Civil War only to discover afterward that people wanted to forget the war not purchase photographs of it.
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The most celebrated cartoon short
Chuck Jones' 1957 seven-minute heartfelt parody of Richard Wagner's Ring, What's Opera, Doc?, was ranked by the animation industry as the greatest-ever cartoon, and was the first cartoon selected by the United States Library of Congress for preservation in the National Film Registry for being 'culturally, historically or aesthetically significant.'
Combining Wagner's dramatic and intense musical themes with the humor and personalities of Bugs Bunny and Elmer Fudd, What’s Opera, Doc? creates a unique fusion that is simultaneously humorous and respectful of the source material. It contains moments of genuine emotion and poignancy. The combination appeals to classical music fans and general audiences, providing a multi-layered experience.
You can view the cartoon below:
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Gamma waves
Gamma waves are the highest energy electromagnetic radiation and are produced by the hottest events in the universe, including supernova explosions, solar flares on the sun, and nuclear explosions. In nuclear medicine, nuclear engineers create gamma rays via fission to make diagnostic imaging such as PET scans.
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Quote of the week:
"It is not who is right, but what is right, that matters."-- Thomas Huxley
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Just an FYI - PET scans do not create gamma rays to produce an image. Rather, the gamma rays are created by decay of the radioactive tracer that is injected into the patient and the PET scanner then detects these gamma rays.