Spinning Cat Space key : silhouette ON/OFF mouse click : motion ON/OFF Which way does the big cat appear to rotate? You can ask your friends if your perceptions are consistent. --- 日本語 --- 回転するネコ スペースキー：シルエットON/OFF マウス クリック：動き ON/OFF 大きいネコはどちらに回転してみえますか？ 知覚が同じか友達に尋ねてみてはいかがでしょう。
52 frames 2D silhouette doesn't have depth information but our perceptual system defines the direction of rotation. Therefore, the perceived direction is unstable and sometimes interchangeable. Small cats have contrasting brightness due to shadows, and the direction of rotation is obvious. https://en.wikipedia.org/wiki/Spinning_dancer #cat #spin #2d #3d #rotation #illusion #optical #silhouette #shadow #science #tutorial #animation
