Spin has transformed modern-day tennis—here's the physics behind it
Watch any match at this year's Australian Open and you'll see balls curving in the air or bouncing higher or lower than ...
朝日新聞社4 年
Spinning top, likely Japan’s oldest, points to foreign rituals
A spinning top from the late seventh century, dug up in the Asuka-Fujiwara district straddling Asuka and Kashihara in Nara Prefecture, was previously thought to be the oldest in Japan.