Video by Sarah Joseph and Jon Betz, Smithsonian Digital Studio; Text by Megan Gambino Benjamin Franklin invented swim flippers when he was 12 years old. Frank Epperson, age 11, conceived of the ...
While working on a project that involved super-thin prints, [Julius Curt] came up with selective ironing, a way to put designs on the top surface of a print without adding any height. For those ...
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