Word: blacking
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Dates: during 1920-1929
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...shining across Biscayne Bay in Florida one day last February as William John Matheson, retired chemical tycoon, sat on his Coconut Grove porch and watched one of his white high-sided launches return with indignant house guests from Key Biscayne six miles away. Close behind came a black speed launch in charge of Coast Guardsmen. A rough sea was running. Spray curtains had been in place. The guardsmen had fired five rifle shots at the Matheson boat to stop...
...Refraction and Speed of Light", Professor Black, Jefferson Laboratory...
...Refraction and Speed of Light", Professor Black, Jefferson Laboratory...
...Refraction and Speed of Light", Professor Black, Physics Laboratory...
...Reflection of Light Waves", Professor Black, Physical Laboratory...