Magnet

例句/造句/用法:

• Gale suggested that his simple electro-magnet, with its few turns of thick wire, should be replaced by one with a coil of long thin wire. 魯伯特·薩金特·荷蘭. 歷史性發明.
• If a close coil of wire is suspended between the poles of a strong horseshoe magnet, it will not assume any characteristic position but will remain wherever placed. 伯莎M.克拉克. 科學通論.
• The simplest form of electric magnet is shown in Fig. 2. 佚名. 神奇的知識之書.
• If a delicately made magnet is suspended as in Figure 223, and is allowed to swing freely, it will always assume a definite north and south position. 伯莎M.克拉克. 科學通論.
• So far Morse had only used his recorder over a few yards of wire, his electro-magnet had been of the simplest make, and his battery was a single pair of plates. 魯伯特·薩金特·荷蘭. 歷史性發明.
• Iron filings scattered over a magnet arrange themselves in definite lines. 伯莎M.克拉克. 科學通論.
• The cylinder stops, and current operates the sluggish press-magnet, causing its armature to be attracted, thus lifting the platen and its projecting arm. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
• The result of moisture in the interior of a magnet is to weaken the effectiveness of the installation, leading eventually to short circuits and burn-outs. 佚名. 神奇的知識之書.
• Again, plac e the magnet in a wooden vessel, and then set the vessel afloat in a tub or cistern of still water. 李貝. 西洋科學史.
• In 1840 Davenport, by means of his electric motor, printed a news sheet called the _Electro Magnet and Mechanics’ Intelligencer_. Edward W. Byrn. 十九世紀發明進展.
• As the magnet recedes from the coil, it carries lines of force away with it, this time reducing the number of the lines which cut the coil. 伯莎M.克拉克. 科學通論.
• Another form of the electric magnet is shown in cross-section in Fig. 3. 佚名. 神奇的知識之書.
• The motion of a magnet within a coil of wire produces a current of electricity. 伯莎M.克拉克. 科學通論.
• Since Oersted’s first electric magnet in 1820, electric magnets have been made in a variety of forms and for many different purposes. 佚名. 神奇的知識之書.
• These inventors conceived and put in practice the great idea of employing the current from an electro-magnetic machine to excite its own electric magnet. 威廉·亨利·杜利特. 世紀發明.
• Safety clutches are numerous, by which the machine is quickly and automatically stopped by the action of electro-magnets should a workman or other obstruction be caught in the machinery. 威廉·亨利·杜利特. 世紀發明.
• His knowledge of magnets was tremendous. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
• Since Oersted’s first electric magnet in 1820, electric magnets have been made in a variety of forms and for many different purposes. 佚名. 神奇的知識之書.
• The magnets used in this river work were three and one-half feet in diameter. 佚名. 神奇的知識之書.
• Inside that bar there are several permanent magnets, packed on each side of the ends of the coil of wire, the poles of those on one side being the opposite of those on the other. 弗雷德里克·科利爾·貝克維爾. 偉大的事實.
• It was of circular form, incased in iron, with the ends of several small magnets sticking through the floor. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
• The blow broke the glass carboy, and the acid ran down upon the field magnets of the dynamo, destroying the windings of one of the twelve magnets. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
• The mode now generally employed to correct deviation is by introducing on board ship masses of iron and magnets to neutralize the action of the ship’s magnetism so far as possible. 佚名. 神奇的知識之書.
• Set going under adequate conditions they are magnets for gathering and retaining an indefinitely wide scope of intellectual considerations. 約翰·杜威. 民主與教育.
• The field magnets in the multipolar machine usually are arranged in radial position around the entire circumference of the revolving armature, and are held in a fixed circular frame. Edward W. Byrn. 十九世紀發明進展.
• They are operated by means of enormous magnets which are suspended at the top of the shaft. 愛德格·賴斯·巴勒斯. 火星戰神.
• Both of these machines had permanent field magnets, and were early types of magneto-electric machines. Edward W. Byrn. 十九世紀發明進展.
• In this illustration, the circuit, it will be seen, passes through both the coils of the field magnets and the coils of the armature, involving the principle of mutual excitation. Edward W. Byrn. 十九世紀發明進展.
• Thus two men and two magnets did the work of twenty-eight men in less than one-fourth of the time. 佚名. 神奇的知識之書.
• It has been said that although Oersted was the discoverer of electro-magnetism and Ampère its expounder, Faraday made the science of magnets electrically what it is at the present day. 威廉·亨利·杜利特. 世紀發明.

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