https://padlet.com/danielrosskent1/z94w2ns42iws What is the difference between the start of the P wave and the start of the S wave? en-us 2017-05-27 05:15:17 UTC 2024-11-28 08:11:13 UTC hello@padlet.com danielrosskent1 https://padlet.com/danielrosskent1/z94w2ns42iws/wish/174066677 2017-05-27 05:19:24 UTC https://padlet.com/danielrosskent1/z94w2ns42iws/wish/174066677