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Is visible spectroscopy the only non-electronic method of all the spectroscopy method?

I know some of the spectroscopy method is possible being used because of electronics.

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No, Ultraviolet spectroscopy and Infra-red spectroscopy were practiced without any use of electricity.

Infra-red and ultraviolet light were both known by 1801.

Ultraviolet absorption lines had been observed by 1843.

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