complete the text about another accidental discovery.Use the past simple or the past continuous tense:
In 1895 physicist Wilhelm Röentgen ..............(perform) a routine experiment with cathode rays, when he................(notice) that a piece of fluorescent cardboard..................(light up).He .................(place) a thick screen between his cathode emitter and the radiated cardboard, proving that particles of light......................(pass) through solid objects.Röentgen ................(realize) the importance of this discovery and..................(make) the first x-ray image with a skeletal image of his wife's hand.
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lighted up
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noticed
lighted up
placed
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made
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