ʻO nā ana a i ʻole nā helu ʻana i ka physics mai nā nui liʻiliʻi loa o nā ʻāpana, e like me ke kaumaha o kahi electron, a i nā nui nui loa, e like me ke kaumaha o ka honua. ʻO ke kākau ʻana i nā hopena o nā ana o nā mea nui loa, no ka laʻana, ʻo ke kaumaha o ka honua ma kahi o 6,000,000,000,000,000,000,000,000,000 kg a i ʻole nā hopena o nā ana o nā ʻāpana liʻiliʻi loa, no ka laʻana, ʻo ke kaumaha o kahi electron ma kahi o 0,000,000,000,000,000,000,000,000,000,000,000,000.911 kg pono kahi ākea nui a kākau pinepine ʻia me ka hewa. No ka lanakila ʻana i kēia pilikia, hiki iā mākou ke hoʻohana i ka hōʻailona ʻepekema.
Ma ke kākau ʻana i ka ʻepekema, ua hōʻike ʻia ka hopena ana penei: a, ….. x 10n
ʻIkepili:
he helu kūlohelohe ʻo a mai 1 - 9
Ua kapa ʻia ʻo n ka exponent a he helu holoʻokoʻa ia
10n hōʻike i ke kauoha
Nā lula no ke kākau ʻana i nā hopena ana me ka hoʻohana ʻana i nā hōʻailona ʻepekema
a) No nā helu ʻoi aku ma mua o 10, e hoʻoneʻe i ke kiko decimal i ka hema. He maikaʻi ka exponent.
Laʻana:
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) No nā helu ma lalo o 1, e hoʻoneʻe i ke kiko decimal i ka ʻākau. He maikaʻi ʻole ka exponent.
Laʻana:
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
