https://padlet.com/danielrosskent1/z4vfbchvn9ji What is the difference between the start of the P wave and the start of the S wave? en-us 2017-05-27 05:27:26 UTC 2024-05-26 20:40:11 UTC hello@padlet.com danielrosskent1 https://padlet.com/danielrosskent1/z4vfbchvn9ji/wish/174066819 2017-05-27 05:29:20 UTC https://padlet.com/danielrosskent1/z4vfbchvn9ji/wish/174066819