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How do we know what earth's outer core can transmit seismically versus the inner core, when all waves have to pass through the inner core anyway?
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I've long read that the inner core was solid due to pressure, but this quote got me thinking: "since this layer is able to transmit shear waves (transverse seismic waves), it must be solid". But since the outer core is liquid, how could seismic waves be able to travel through the core anyway?
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