But what IS gravity? #PHYS1303 students can watch the last 17 minutes of their next lecture video to get a peek behind the curtain of introductory physics to see a deeper reality that likes beyond introductory physics. https://www.youtube.com/watch?v=FQYMNS5Vjug&feature=youtu.be https://twitter.com/drsekula/status/985295217959096327/photo/1 https://chirp.cooleysekula.net/attachment/49899