Speakers (also called loudspeakers) push and pull surrounding air molecules in waves that the human ear interprets as sound. You could even say that hearing is movement detection. So what makes a speaker travel back and forth at just the right rate and di
Oliver Jeffers - Projects "For 36 weeks in myself and three other artists sent a sketchbook back and forth across the Atlantic between us, each artist responding to the spread that proceeded them. When it was finished, book had travelled over miles.
A Drawing Game for Kids - Connect thru creativity with this back-and-forth drawing game!