https://en.wikipedia.org/wiki/Dynamic_random-access_memory#Principles_of_operation https://en.wikipedia.org/wiki/Dynamic_random-access_memory#P... It turns out

https://en.wikipedia.org/wiki/Dynamic_random-access_memory#Principles_of_operation https://en.wikipedia.org/wiki/Dynamic_random-access_memory#P... It turns out they intentionally drain a bit of the storage capacitor, and amplify that weak signal. Some of that amplified charge is then fed back to storage.