Litekanyo kapa lipalo fisiks li tloha ho boholo ba likaroloana tse nyane haholo, joalo ka boima ba elektrone, ho isa boholong bo boholo haholo, joalo ka boima ba lefats'e. Ho ngola liphetho tsa litekanyo tsa lintho tse kholo haholo, mohlala, boima ba lefats'e bo ka ba 6,000,000,000,000,000,000,000,000 kg kapa liphetho tsa litekanyo tsa likaroloana tse nyane haholo, mohlala, boima ba elektrone bo ka ba 0,000,000,000,000,000,000,000,000,000,000,000,000,000.911 kg e hloka sebaka se seholo 'me hangata e ngoloa ka phoso. Ho rarolla bothata bona, re ka sebelisa notation ea mahlale.
Mongolong oa saense, sephetho sa tekanyo se hlahisoa ka tsela e latelang: a, ….. x 10n
Lintlha :
a ke nomoro ea tlhaho e tlohang ho 1 ho isa ho 9
n e bitsoa exponent mme ke palo e felletseng
10n odara ea pontšo
Melao ea ho ngola liphetho tsa tekanyo ho sebelisoa lintlha tsa saense
a) Bakeng sa dinomoro tse fetang 10, suthisetsa ntlha ya desimale ka letsohong le letshehadi. Sephetho se nepahetse.
Mohlala:
210000000 m = 2,1 x 108 m
62400,1 m = 6,24001 x 104 m = 6,2 x 104 m
33000 m = 3,3 x 104 m
b) Bakeng sa dinomoro tse ka tlase ho 1, suthisetsa ntlha ya desimale ka ho le letona. Sehlomathiso ke negative.
Mohlala:
0,0045 m = 4,5 x 10-3 m
0,000000234 m = 2,34 x 10-7 m = 2,3 x 10-7 m
0,0001075 m = 1,075 x 10-4 m = 1,1 x 10-4 m
