Last night while getting to sleep, I couldn鈥檛 help but notice the sound of the second hand on my wall clock. I would have thought that the mechanism would produce an identical noise at each movement, but there is a discernible difference, much like the 鈥渢ick-tock鈥� used to describe the sound. So is there really a difference or am I just conditioned to hear one?
Tate Oulton, By email, no address supplied