The mankind take the bearings to mainly depend the sun before the mariner"s compass invent, moon etc. heavenly body, perhaps mountain stone tree etc. marking thing, however, these meanses for taking the bearings all has it to limit sex: is taken the bearings by heavenly body under the bad weather environment and then can"t carry out, for example rainy day, fog day, cloudy day.But depend marking a thing to take the bearings can limit at inside small scope.
Afterwards people discover the south North Pole characteristic of loadstone but invented mariner"s compass.Can take the bearings accurately under any environment thus.
Mariner"s compass the biggest contribution is to promote maritime development, transport at the sea of flourishing and discover New Continent etc. the mariner"s compasses all perform feats
(2)
Before compass invention the humanity takes one"s bearings mainlydepends on the sun, heavenly body and so on the moon, or sign and soon mountain stone trees, however, these
(1)
The mankind take the bearings to mainly depend the sun before the mariner"s compass invent, moon etc. heavenly body, perhaps mountain stone tree etc. marking thing, however, these meanses for taking the bearings all has it to limit sex: is taken the bearings by heavenly body under the bad weather environment and then can"t carry out, for example rainy day, fog day, cloudy day.But depend marking a thing to take the bearings can limit at inside small scope.
Afterwards people discover the south North Pole characteristic of loadstone but invented mariner"s compass.Can take the bearings accurately under any environment thus.
Mariner"s compass the biggest contribution is to promote maritime development, transport at the sea of flourishing and discover New Continent etc. the mariner"s compasses all perform feats
(2)
Before compass invention the humanity takes one"s bearings mainlydepends on the sun, heavenly body and so on the moon, or sign and soon mountain stone trees, however, these