An RFID coil made on silk substrate and gold that can help tell when food goes bad.

丝蛋白基质上的无线射频识别线圈能够显示食物何时会变质。

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The team's set-up consisted of an inducting coil connected to a capacitor.

该小组的设备是一个电容和一个与其连接的感应线圈。

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The energy within this circuit oscillates rapidly between an electric field in the capacitor and a magnetic field in the coil.

电容产生电场，线圈生成磁场，电路中的能量就在电场和磁场之间高速振荡。

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The DuoSense software identifies the position of the Pencil and the pressure level, removing the need for an excitation coil within the DuoSense digitizer and can be used either as an integral part of the solution or as an optional after-market accessory, enabling OEMs to offer system upgrades, making the Digital Pencil ideal for the consumer market.

ENGADGET: N-trig's Digital Pencil plays pen and fingertip roles, claims mastery of both

The other arm carries a wire coil attached to an electric circuit in other words, an electromagnet.

ECONOMIST: Weighing a kilogram

"No, there's an inductive coil built into to the underside of the counter, " was the reply.

ENGADGET