Post #1516

@perspectiveix

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نُشر2 سبتمبر02‏/09‏/2018، 06:00 م

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محتوى المنشور

🔇Isolator: To save your most valuable asset - Attention! Hugo Gernsback wearing his Isolator, which eliminates external noises for concentration, from Science and Invention, July, 1925 Credit: Syracuse University Libraries, Special Collections Research Center 🚀@PerspectiveIX