Question

what is the full form of AC, DC and what are the ancient methods to calculate time, tide and years.

Answer 1

Full Forms :-

AC :- ALTERNATING CURRENT

DC:- DIRECT CURRENT

ANCIENT METHOD TO CALCULATE TIME :-

THE ANCIENT EGYPTIANS USED TO LOCATE THE POSITION OF SUN AND FIND THE TIME.

THE ALSO FOUND THE DISTANCE BETWEEN TWO PLACES USING THIS , A UNIT WAS USED CALLED STADIAM = 5000 METERS

EARLIER PEOPLE UESD TO LOOK AT THE SUN AND FIX TIME

EG-

WHEN THE SHORTEST SHADOW CAN BE SEEN IT MEANS THE SUN IS OVERHEAD AND THEY DERIVED IT IN THIS WAY