Book III chapter 8

Of Discords¹ between pieces of Iron upon the same pole of a loadstone, and how they can agree and stand joined together.

S uppose two iron wires or a pair of needles stuck on the pole of a terrella; though they ought to stand perpendicularly³, they mutually repel⁵ one another at the upper end, and produce the appearance of a fork; and if one end be forcibly impelled⁶ toward the other, the other declines and bends

away from association with it, as in the following figure. Spikes⁷ raised obliquely due to their nearness." alt="Spikes raised obliquely due to their nearness." src="https://ebooks.adelaide.edu.au/g/gilbert/william/on-the-magnet/figures/illo114.jpg" /> A and B, iron spikes, adhære obliquely²⁰⁷ upon the pole on account of their nearness to one another; either alone would otherwise stand erect⁸ and perpendicular⁴. For the extremities⁹ A B, being of the same verticity, mutually abhor¹⁰ and fly one another. For if C be the northern pole of the terrella, A and B are also northern ends; but the ends which are joined to and held at the pole C are both southern. But if those spikes be a little longer (as, for example, of two digits¹¹ length) and be joined by force, they adhære together and unite in a friendly style, and are not separated without force. For they are magnetically welded, and there are now no longer two distinct ends, but one end and one body; no less than a wire which is doubled and set up perpendicularly. But here is seen also another subtile point, that if those spikes were shorter, not as much as the breadth of one digit¹², or even the length of a barleycorn, they are in no way willing to harmonize or to stand straight up at the same time, because naturally in shorter wires the verticity is stronger in the ends which are distant from the terrella and the magnetick discord² more vehement¹³ than in long ones. Wherefore they in no way admit of an intimate association and connection.

Likewise if those lighter¹⁴ pieces of iron or iron wires be suspended, hanging, as A and B, from a very fine silk thread, not twisted but braided, distant from the stone the length of a single barleycorn, then the opposing ends, A and B, being situated¹⁵ within the orbe of virtue¹⁶ above the pole, keep a little away from one another for the same reason; except when they are very near the pole of the stone C, the stone then attracting them more strongly toward one end.

1 discords   

不和（discord的复数形式）

参考例句：

• There are many discords in this family. 在这个家庭里有许多争吵。
• The speaker's opinion discords with the principles of this society. 演讲者的意见与本会的原则不符。

2 discord   

n.不和，意见不合，争论，（音乐）不和谐

参考例句：

• These two answers are in discord.这两个答案不一样。
• The discord of his music was hard on the ear.他演奏的不和谐音很刺耳。

3 perpendicularly   

adv. 垂直地, 笔直地, 纵向地

参考例句：

• Fray's forehead was wrinkled both perpendicularly and crosswise. 弗雷的前额上纹路纵横。
• Automatic resquaring feature insures nozzle is perpendicularly to the part being cut. 自动垂直功能，可以确保刀头回到与工件完全垂直的位置去切割。

4 perpendicular   

adj.垂直的，直立的；n.垂直线，垂直的位置

参考例句：

• The two lines of bones are set perpendicular to one another.这两排骨头相互垂直。
• The wall is out of the perpendicular.这墙有些倾斜。

5 repel   

v.击退，抵制，拒绝，排斥

参考例句：

• A country must have the will to repel any invader.一个国家得有决心击退任何入侵者。
• Particles with similar electric charges repel each other.电荷同性的分子互相排斥。

6 impelled   

v.推动、推进或敦促某人做某事( impel的过去式和过去分词 )

参考例句：

• He felt impelled to investigate further. 他觉得有必要作进一步调查。
• I feel impelled to express grave doubts about the project. 我觉得不得不对这项计划深表怀疑。 来自《简明英汉词典》

7 spikes   

n.穗( spike的名词复数 )；跑鞋；（防滑）鞋钉；尖状物v.加烈酒于( spike的第三人称单数 )；偷偷地给某人的饮料加入（更多）酒精（ 或药物）；把尖状物钉入；打乱某人的计划

参考例句：

• a row of iron spikes on a wall 墙头的一排尖铁
• There is a row of spikes on top of the prison wall to prevent the prisoners escaping. 监狱墙头装有一排尖钉，以防犯人逃跑。 来自《简明英汉词典》

8 erect   

n./v.树立，建立，使竖立；adj.直立的，垂直的

参考例句：

• She held her head erect and her back straight.她昂着头，把背挺得笔直。
• Soldiers are trained to stand erect.士兵们训练站得笔直。

9 extremities   

n.端点( extremity的名词复数 )；尽头；手和足；极窘迫的境地

参考例句：

• She was most noticeable, I thought, in respect of her extremities. 我觉得她那副穷极可怜的样子实在太惹人注目。 来自辞典例句
• Winters may be quite cool at the northwestern extremities. 西北边区的冬天也可能会相当凉。 来自辞典例句

10 abhor   

v.憎恶；痛恨

参考例句：

• They abhor all forms of racial discrimination.他们憎恶任何形式的种族歧视。
• They abhor all the nations who have different ideology and regime.他们仇视所有意识形态和制度与他们不同的国家。

11 digits   

n.数字( digit的名词复数 )；手指，足趾

参考例句：

• The number 1000 contains four digits. 1000是四位数。 来自《简明英汉词典》
• The number 410 contains three digits. 数字 410 中包括三个数目字。 来自《现代英汉综合大词典》

12 digit   

n.零到九的阿拉伯数字，手指，脚趾

参考例句：

• Her telephone number differs from mine by one digit.她的电话号码和我的只差一个数字。
• Many animals have five digits.许多动物有5趾。

13 vehement   

adj.感情强烈的；热烈的；(人)有强烈感情的

参考例句：

• She made a vehement attack on the government's policies.她强烈谴责政府的政策。
• His proposal met with vehement opposition.他的倡导遭到了激烈的反对。

14 lighter   

n.打火机，点火器；驳船；v.用驳船运送；light的比较级

参考例句：

• The portrait was touched up so as to make it lighter.这张画经过润色，色调明朗了一些。
• The lighter works off the car battery.引燃器利用汽车蓄电池打火。

15 situated   

adj.坐落在...的，处于某种境地的

参考例句：

• The village is situated at the margin of a forest.村子位于森林的边缘。
• She is awkwardly situated.她的处境困难。

16 virtue   

n.德行，美德；贞操；优点；功效，效力

参考例句：

• He was considered to be a paragon of virtue.他被认为是品德尽善尽美的典范。
• You need to decorate your mind with virtue.你应该用德行美化心灵。