Вопрос № 237468 - Английский язык

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Solar cell is a _______ devised to convert light to electric current.

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Electricity complete changed communications. Once it was discovered that аn electric current would flow along a wire, it seemed possible that it could be used for messages. As long as two places were connected by a wire electric currents could be sent along it. They could be sent with the speed of light. The question was how could electric current make words?

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 _______ sensors are used to detect liquid or powder levels, or interfaces between liquids.

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 _______ is the most commonly used semiconductor material today, along with gallium arsenide, germanium, and some other materials.

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The resistive temperature device can actually be regarded as a high precision wire wound _______.

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 _______ sensing devices are used to measure levels of solid, dry materials.