Ampere

[m'pr] 美式发音

(noun.) the basic unit of electric current adopted under the Systeme International d'Unites; 'a typical household circuit carries 15 to 50 amps'.

(noun.) a former unit of electric current (slightly smaller than the SI ampere).

康妮手打

• Lieb wrote from Milan, Italy, that he had in use on the Edison system there 360 meters ranging from 350 ampere-hours per month up to 30,000. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• We had an index like a steam-gauge, called an ampere-meter, to indicate the amount of current going out. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• He replied: 'Everything is red-hot, and the ampere-meter has made seventeen revolutions. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• A current is said to be one ampere strong if it will deposit silver on an electrode at the rate of 0. 伯莎M.克拉克. 科学通论.
• A current of one ampere, having a voltage of one volt, will furnish in the course of one hour one watt hour of energy. 伯莎M.克拉克. 科学通论.
• The unit of electric power is called the watt; it is the power furnished by a current of one ampere with a voltage of one volt. 伯莎M.克拉克. 科学通论.
• The watt then would be the volt multiplied by the ampere; thus 500 watts would be 10 amperes at 50 volts, or 50 amperes at 10 volts. Edward W. Byrn. 十九世纪发明进展.
• Ampere would be the quantity, or volume unit, or cross section of the hose pipe, and the ohm would be the unit of frictional resistance. Edward W. Byrn. 十九世纪发明进展.
• Discoveries in Electro-magnetism by Ampere and Arago. Edward W. Byrn. 十九世纪发明进展.
• The meters commonly used measure the amperes, volts, and time automatically, and register the electric power supplied in watt hours. 伯莎M.克拉克. 科学通论.
• The early arc lamps were rated to require 9 to 10 amperes of current, at 45 volts pressure each, receiving which they were estimated to give 2000 c. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• An iron bar was also used, polished, and with a man standing on it to insure solid contact; but only one thousand amperes passed through it--i. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Knowing the time during which the current has run, and the amount of deposit, the strength of the current in amperes can be calculated. 伯莎M.克拉克. 科学通论.
• It was several months before he could convey one hundred amperes by means of such contacts, but he worked out at last a satisfactory device which was equal to the task. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Thus a current of from one to two volts, and one to several thousand amperes, is best suited. Edward W. Byrn. 十九世纪发明进展.
• For the locomotive a four-wheel iron truck was used, and upon it was mounted one of the long Z type 110-volt Edison dynamos, with a capacity of 75 amperes, which was to be used as a motor. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The next point was to secure a joint between contiguous rails such as would permit of the passage of several thousand amperes without introducing undue resistance. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The watt then would be the volt multiplied by the ampere; thus 500 watts would be 10 amperes at 50 volts, or 50 amperes at 10 volts. Edward W. Byrn. 十九世纪发明进展.

安娜贝拉录入