Name: ゴルフボールの中身は？科学技術が詰まった、遠くまで飛ぶ仕組み | What's Inside | WIRED.jp
Uploaded: 2021-07-05T19:25:10.000Z
Duration: 1 min 41 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Relative clauses (Restrictive vs. nonrestrictive)

Anyone who's ever sliced into a sand trap knows golf is not an exact science, but what goes into the modern golf ball is now back in the old days.

The ancestors of today's titlists and tailor mades were simply compressed goose feathers wrapped in leather.

But then 19th century manufacturers switched to go to purchase a K.

Trans Polly Supreme, a polymer of natural rubber leading to cheaper, more durable balls known as coyotes.

Early golfers also discovered that dimpled balls had less drag than smooth ones, Thus increasing their lift and accuracy.

So today you'll find up to 482 indentations on average ball surface, a sleek, aerodynamic shell of polyurethane elastomers combining flexibility with a tremendous resistance to abrasion and that created casing is wrapped around a masters tournament of ingredients like zinc oxide used as a filler and polybutadiene, a polymer that's basically rubber with memory, allowing the material to revert to its original shape in 1/1000 of a second, say after getting whacked by a club.

Then when you go looking for your ball, it may be easier to find, thanks to master batch rat, a polymer used for coloring just one more way.

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