please answer my question

thank you for giving me an apportunity to ask my question which said

what does it mean the {s} that in the end of the time expression

e .g

the chinese used the compass in 300S

thanks again

[twostep]

Please give me an example.

[Tdol]

It means the third century:

the 1990s = that decade

in the 1900s = that century, though probably the earlier part IMO

[twostep]

Now I am almost there.

[blacknomi]

http://www.grand-illusions.com/compass.htm

The original Han Dynasty Chinese Compasses date from the Fourth Century BC.

I'm there waving hands at you!!! Come! Come!