Anonymous ID: f020c2 Feb. 26, 2020, 12:46 p.m. No.8257283   🗄️.is 🔗kun

>>8257209

 

>>8257220

>>8257278

 

>But that elastic force would be felt along its entire length immediately.

 

Force is a wave phenomenon. Waves transmit energy, including mechanical energy.

 

Waves have frequencies, which introduce time element.