Thursday, 29 July 2010

Speculations: nature of matter: lines of force

~~An extract~~

The lines of force have their roots in the magnet, and though they may expand into infinite space, they eventually return to the magnet. Now these lines may be intersected close to the magnet or at a distance from it. Faraday finds distance to be perfectly immaterial so long as the number of lines intersected is the same. For example, when the loop connecting the equator and the pole of his barmagnet performs one complete revolution round the magnet, it is manifest that all the lines of force issuing from the magnet are once intersected. Now it matters not whether the loop be ten feet or ten inches in length, it matters not how it may be twisted and contorted, it matters not how near to the magnet or how distant from it the loop may be, one revolution always produces the same amount of current electricity, because in all these cases all the lines of force issuing from the magnet are once intersected and no more.

From the external portion of the circuit he passes in idea to the internal, and follows the lines of force into the body of the magnet itself. His conclusion is that there exist lines of force within the magnet of the same nature as those without. What is more, they are exactly equal in amount to those without. They have a relation in direction to those without; and in fact are continuations of them.... 'Every line of force, therefore, at whatever distance it may be taken from the magnet, must be considered as a closed circuit, passing in some part of its course through the magnet, and having an equal amount of force in every part of its course.'
http://worldebooklibrary.org/eBooks/WorldeBookLibrary.com/fdayd.htm

10 comments:

沈許玉佳貞儀 said...

困難的不在於新概念,而在於逃避舊有的概念。............................................................

偉曹琬 said...

不願彎腰撿拾一根針的人,永遠不值得一塊錢。............................................................

誠陳侑 said...

要保持更新呦,加油!!!期待你的新文章!!!............................................................

麗王王珠 said...

多謝美味的心靈雞湯................................................................

阿袁袁袁袁華 said...

做些小善事,說些愛的字句,世界更快樂。..................................................

翊翊翊翊張瑜翊翊翊 said...

今夜星光多美好~祝你快樂~~~~............................................................

翊翊翊翊張瑜翊翊翊 said...

安安唷~~幸運的日子送給妳(你)滿滿的幸福,也祝福你天天都開心唷............................................................

惠邱邱邱邱雯 said...

來給你加油,幫你推一下喔~期待你的下一個更新,謝謝............................................................

黃怡君 said...

生命的意義,是在於活的充實;而不是在於活得長久。............................. ....................................

王辛江淑萍康 said...

認清問題就等於已經解決了一半的問題。..................................................