National Zipper Day
カートのアイテムが多すぎます
カートに追加できませんでした。
ウィッシュリストに追加できませんでした。
ほしい物リストの削除に失敗しました。
ポッドキャストのフォローに失敗しました
ポッドキャストのフォロー解除に失敗しました
National Zipper Day
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概要
In this episode, discover how a simple fastening device evolved into a global necessity. Building on earlier designs by Elias Howe and Whitcomb Judson, Sundback created a reliable interlocking tooth system that gained use in military gear and clothing. Over time, the zipper became a standard feature in garments, bags, and equipment worldwide. Its success came not from invention alone, but from steady improvement and persistence. This story highlights innovation, collaboration, and how small ideas can have a massive impact.
Read the full article here: https://familyschool.org/spotlight/zipperday-8
This episode was created using Notebook LM voice-overs and original research by Rosemary Pollock, historian and published author, who holds an MA in U.S. History and an MA in U.S. History with a focus on the History of Science and Medicine.
Produced by Isaac Okawa with American Heritage Worldwide.