Yes. Here’s how:
A satoshi is the smallest unit of a bitcoin.
But Lightning can transact with even smaller units while channels are open.
Milli-satoshis, or msats, are the native unit of the Lightning Network.
A milli-satoshi is simply 1/1,000th of a satoshi.
There are 1,000 milli-satoshis in 1 satoshi.
When the channel is closed and broadcast on-chain, the amount of msats is rounded down to the nearest satoshi.
Bookkeeping off-chain allows Bitcoin to be infinitely divisible👍🏻
1sat =1000 mSat