I understanding what mining is...
I am more asking what Dual Mining is? Mining two coins at once? Two Pools at once? How do this effect hash rate? Does it half the hash rate of mining a single coin at once?
Thanks
Dual mining is refering to a specific mining software : the Claymore"s dual miner.
This software is the only one who permit you to mine 2 cryptocurrencies at the same time, with a good hashrate for the two (very near than full hashrate for the first : Ethereum and a bood hashrate for the second : Decred, Lbry, SiaCoin, Pascal...).
This is possible because some crytos use more the GPUs units (calculations) and some others use more the memory (GPU memory).