newVideoPlayer( {"type":"video","player":"http://www.youtube.com/v/OiCPu0SjEW4&hl=en&fs=1&fmt=22","customParams":[] ,"width":500,"height":400,"ratio":0.824,"flashData":"","embedName":null,"objectId":null,"noEmbed":false,"source":"youtube","wrap":true,"agegate":false} ); How do those second hands keep ticking off the minutes, and minute hands the hours, and hours the days? The same way they have since long before this 1949 explanatory video was made: gears, springs, and so much more.