科學ON099
Posted: Mon Jun 01, 2015 9:30 pm
想問下如何解說, 唔好睇D手寫字, 可能錯!!!
THANKS!!!
THANKS!!!
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Re: 科學ON099
Posted: Mon Jun 01, 2015 9:42 pm
Re: 科學ON099
Posted: Mon Jun 01, 2015 9:46 pm
Stroking is one of the method to make magnetic object.
The more time it was stroked, the stronger magnetic field it can create.
The more time it was stroked, the stronger magnetic field it can create.
Re: 科學ON099
Posted: Mon Jun 01, 2015 10:01 pm
家陣d小學書咁x深的 
Re: 科學ON099
Posted: Mon Jun 01, 2015 10:21 pm
呢個唔係一定，無限次stoke咁磁力就有無限大？藥皇 wrote: Stroking is one of the method to make magnetic object.
The more time it was stroked, the stronger magnetic field it can create.
Re: 科學ON099
Posted: Tue Jun 02, 2015 1:34 am
小學生.. 唔好想太多.andyyau wrote:呢個唔係一定，無限次stoke咁磁力就有無限大？藥皇 wrote: Stroking is one of the method to make magnetic object.
The more time it was stroked, the stronger magnetic field it can create.
尋日教阿女又係有一個實驗唔係一定, 但如果咁講又早左四/五年 (應該中學先學到)
Re: 科學ON099
Posted: Tue Jun 02, 2015 7:18 am
THANKS!!!!
Re: 科學ON099
Posted: Tue Jun 02, 2015 7:24 am
搵到答案未。。sony_boy wrote: THANKS!!!!
Re: 科學ON099
Posted: Tue Jun 02, 2015 10:22 am
常識科?
Re: 科學ON099
Posted: Tue Jun 02, 2015 10:24 am
睇都睇唔明