Assertion: photography's effect | /r/ObjectUse | used by dennis oppenheim
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Source sentences:
text: Humphry Davy and Thomas Wedgewood reported that they had produced pictures from stencils on leather and paper, but had no means of fixing them and some organic substances respond to light, as evidenced in sunburn (an effect used by Dennis Oppenheim in his 1970 Reading Position for Second Degree Burn) and photosynthesis (with which Lloyd Godman forms images).