Hōʻike ʻepekema

Anter

• Nā laʻana o ka nota ʻepekema

ʻO ka Hōʻike ʻepekema, kāhea ʻia hoʻi palapala hoʻoilina a palapala paha, ʻae iā ʻoe e hōʻike i nā helu nui a liʻiliʻi paha i kahi ala pōkole a maʻalahi hoʻi, e hoʻomaʻalahi i ke kākau ʻana a kōkua i ka wā e pono ai ʻoe e hana i nā makemakika me kēia mau helu a hoʻohui ʻia i loko o nā formulate a i ʻole nā ​​hoʻohālikelike.

Manaʻo ʻia ʻo ia nō ʻO Archimedes nāna i hoʻolauna i nā ala mua i alakaʻi i ka manaʻo o ka notation science.

ʻO kahelu ma ka nota ʻepekema kākau ʻia lākou ma ke ʻano he huahana o ka huina helu a helu kekona paha ma waena o 1 a me 10 a me ka mana o ka base 10.

I kēia ala, pane ka ʻike ʻepekema i kēia ʻano hana: n x 10^x o n x 10^-x. Ma ke ʻano he hana kūpono, hiki ke ʻōlelo ʻia e hoʻolilo i nā kiʻi i ʻoi aku ma mua o 1 i ka nota ʻepekema, pono ʻoe e kau i kahi koma ma hope o ka huahelu mua a helu i ka exponent e pili ana i ka nui o nā wahi i ka hema.

E hoʻolilo i nā kiʻi ma lalo o 1 i ka nota ʻepekema, E kau ʻoe i kahi koma ma hope o ka helu ʻelua a hope paha a helu i ka exponent ma muli o ka nui o nā wahi i ka hema., i hōʻike ʻia me he maikaʻi ʻole. I nā hiʻohiʻona i hāʻawi ʻia ma luna nei, ʻo 6.022 × 10 ka helu a Avogadro²³ aʻo ke kaupaona o ka hydrogen ʻo 1.66 × 10^-23.

Hiki ke kākau ʻia nā helu i ka nota ʻepekema ma ke ʻano he not exponential. ʻO kahi laʻana, 4 × 10⁸ hiki ke kākau ʻia ma ke ʻano he 4e + 8.

E hoʻonui i nā helu i ka nota ʻepekema, pono ʻoe e e hoʻonui i nā helu ma ka ʻaoʻao hema, hoʻonui ʻia kēlā huahana e 10 i hāpai ʻia i ka huina o kēlā me kēia hōʻike. E hoʻokaʻawale i nā helu i ka nota ʻepekema, pono ʻoe e puʻunaue i nā helu ma ka ʻaoʻao hema, a hoʻonui ʻia ka hopena e 10 i hāpai ʻia i ka unuhi o nā mea hōʻike.

Nā laʻana o ka nota ʻepekema

Eia nā laʻana o nā kiʻi i ka nota ʻepekema.

1. 7.6 x 10¹² kilomita (mamao ma waena o ka lā a me Pluto ma kahi mamao loa i kāna kaho.
2. 1.41 x 10²⁸ mika cubic (ka nui o ka lā).
3. 7.4 x 10¹⁹ nā tona (ka nui o ka mahina)
4. 2.99 x 10⁸ mika / kekona (ka wikiwiki o ke kukui i ka hakahaka)
5. 3 x 10¹² ka helu o nā koʻohune i hiki i ka gram o ka lepo
6. 5,0×10^-8 Kūmau ʻo Planck
7. 6,6×10^-12 ʻO kā Rydberg mau
8. 8,41 × 10^-16proton m kahahnai
9. 1.5 x 10^-5 mm ka nui o kahi virus
10. 1.0 x 10^-8 cmā nui o ka ʻĀtoma
11. 1.3 x 10¹⁵ nā lita (ka nui o ka wai i kahi wai)
12. 0.6 x 10^-9                  
13. 3.25 x 10⁷
14. 2 x 10^-4
15. 3.7 x 10¹¹
16. 2.2 m 10⁷
17. 1.0 x 10^-9
18. 6.8 x 10⁵
19. 7.0 x 10^-4
20. 8.1 x 10¹¹