2 ms·
Interesting. At what point does it stop being sounds waves traveling through the ground and start becoming straight-up seismic vibrations caused by the (effecti
by bsmith 7y ago
Interesting. At what point does it stop being sounds waves traveling through the ground and start becoming straight-up seismic vibrations caused by the (effective) explosions happening on the pad? Probably a bit of a spectrum, as the ground is itself acting like a giant woofer of sorts. I wonder where such a launch registers on the Richter scale...
- lenticular 7y agoThe sound waves in the ground actually are seismic waves, there's no real distinction. The difference is that air essentially just has longitudinal pressure waves (like P-waves), whereas the ground has transversely oriented shear (S) waves and a number of surface waves.