Just like with your flashlight that you have at home, you sometimes have to put in several cells in series to get a higher voltage so that you can power a small light bulb.

就像你家里的，手电筒，你有时必须，放几个电池，来达到一个更高的电压，以此点亮一个小灯泡。

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Remove the coil from the form, bind it with cord so that it forms a ring, and connect the ends to the terminals of a miniature socket that accommodates a flashlight bulb.

从表格中删除线圈，约束与脊髓，使其形成一个环，并连接两端的插座，可以容纳一个微型手电筒灯泡的终端。

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Secret of the Flashlight bulb With the coil held snugly against the socket, and the bulb in place, dip the wire and base into melted paraffin, covering everything but the glass bulb.

手电筒灯泡的秘密随着线圈紧贴举行反对插座，灯泡在地方，浸入熔化的石蜡电线基地，覆盖一切，但玻璃灯泡。

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Typically, the doctors apply about a thousandth of the power that's used in a flashlight bulb.

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The solution was a vacuum cap that sits over the whole unit, much like the glass globe surrounding the tungsten filament in a flashlight bulb.

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