@thor picturing it as waves sloshing back and forth is entierly accurate.

In fact in early computers memory (on the order of bits) was done via physical delay lines where 1s and 0s were represented as waves in a pool of mercury. If the ends of the tank werent perfectly calibrated to match it youd get reflections and your data would degrade.

Can you imagine being the guy with the screw driver who was like "Oh shit my computer broke again, gotta readjust the sprints in my liquid tank of mercury based memory"