Question

Question :-

How it is possible ?
First 8 mins then in between 7 mins and then again 8 mins.
Quite surprising :l

Thank you
@ telex friend ​

Answer 1

congrulation bro

A three-dimensional coordinate measuring machine and optical microscope are used together, that is, the macroscopic size of the feather is measured using the detection technology of the three-dimensional coordinate measuring machine, and the optical microscope is then used.

Answer 2

Answer:

even I got many thanks like this