:
(: ) 1 = 60 ;
(: ) 1 = 60 = 3600 ;
(: ) 2 1 = 24 =86 400 .
*2 ( , 1582 ., 365 366 4 , , 400, .)
:
(: 0) 10 = 180 ;
(: ') 
;
(: ") 
;
(: ) 
.
:
(: );
1 = 1 3 = 10-33.
:
(: ),
1 = 1 = 103 ;
(: ..) 1/12 12,
1 ... = 1,660540 = 1,660540×10-27
.
, , :
- (: ∙),
1 ∙ = 3,6 = 3,6×103 ;
- (: ) , , 1 . - . 1 = 160,2177 = 1,602177×10-19
.
