2 ms·"The human eye can see 39620Hz": https://youtu.be/Sb_7uN7sfTw https://youtu.be/Sb_7uN7sfTwby inigyou 3mo ago"The human eye can see 39620Hz": https://youtu.be/Sb_7uN7sfTw https://youtu.be/Sb_7uN7sfTw