8.Approximately thirteen seconds before impact, the Copperhead's laser light sensor becomes active, and it uses fins to guide itself to the laser light source.
9.Studies on heat exchanger aluminum fin precoat of air conditioner were reviewed. Six types of precoat as well as the application of hydrophilic precoat were described.
10.The lively and recognizable Tiger barb should never be kept with long-finned species, such as angelfish, gouramis, or Veiltail hybrids as they like to nibble at their fins!