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What did one of the first X-ray photographs show?

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Diagram of the electromagnetic spectrum showing different types of waves arranged by wavelength and frequency, from gamma rays and X-rays to ultraviolet, visible light, infrared, microwave, TV/FM radio, shortwave radio, AM radio, and longwave radio. — X-ray The relationship of X-rays to other electromagnetic radiation within the electromagnetic spectrum.

One of the first X-ray photographs taken by Wilhelm Conrad Röntgen showed the skeleton of his wife’s hand. He also produced early X-ray images of the interiors of various metal objects.123