by tonytran2015 (Melbourne, Australia).
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(Blog No. 1xx).
The magnetic navigational compasses may have been first used by Indian people and may not have been first invented by Chinese people as often claimed.
#compass, #navigation, #lodestone, #Chinese compass, #Olmec magnetic, #Indian compass, #yantra, #matsya yantra
Indian mariners had first use of magnetic navigational compasses.
1. Claims that China invented the compasses.
Wikipedia said that
“The first compasses were made of lodestone, a naturally magnetized ore of iron, in Han dynasty China between 300 and 200 BC.”
The entry on Han Dynasty said that
“The Han dynasty (/hɑːn/; Chinese: 漢朝; pinyin: Hàn cháo) was the second imperial dynasty of China (206 BC–220 AD).” 
So the compasses are used in China after 206 BC…
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