Platinum

(noun.) a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits.

迪克整理

• Valuable metallic ores, such as those of gold, platinum, tin, copper and iron, often occur in the form of sand or mixed with that substance. 佚名. 神奇的知识之书.
• The carbon disk is represented by the black portion, E, near the diaphragm, A, placed between two platinum plates D and G, which are connected in the battery circuit, as shown by the lines. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• It was carbon, and might be able to stand a stronger current than platinum. 鲁伯特·萨金特·荷兰. 历史性发明.
• It was already dark when they were conducted into the machine-shop, where we had several platinum lamps installed in series. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Then began the long months of testing platinum wire. 鲁伯特·萨金特·荷兰. 历史性发明.
• A great variety of lamps was made of the platinum-iridium type, mostly with thermal devices to regulate the temperature of the burner and prevent its being melted by an excess of current. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The hammer G and platinum strip F were connected to the opposite ends of a wire, which had in its circuit a battery and a receiver. Edward W. Byrn. 十九世纪发明进展.
• If fine platinum wire is placed in an ordinary gas flame, it does not melt, but if placed in a flame of burning hydrogen, it melts very quickly. 伯莎M.克拉克. 科学通论.
• Experiment with this, however, resulted in failure, and then we tried mixing in with the platinum about ten per cent. 鲁伯特·萨金特·荷兰. 历史性发明.
• The cautery consists of a loop of platinum wire carried by a suitable non-conducting handle, with means for constricting the white hot loop of wire about the tumor or object to be excised. Edward W. Byrn. 十九世纪发明进展.
• When the picture is sufficiently impressed, he etches it into the plate by means of bichloride of platinum. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• It will be remembered that many of the earlier experiments were based on the use of strips of platinum; while other rare metals were the subject of casual trial. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• He had arranged twenty jars with platinum electrodes held in place by hard rubber. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Another method of giving illuminating power to water gas was to surround the flame with platinum gauze, which was rendered incandescent by the heat, and became highly luminous. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• Platinum even in those days was very expensive, costing several dollars an ounce, and I owned only three small strips. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

手打:谢莉