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Fig. 1 | Heritage Science

Fig. 1

From: Back protection of canvas paintings

Fig. 1

A back view of the experimental canvas stretched over a wooden frame. The fine thermocouples (TC) which spring against the painting canvas and the back plate are scarcely visible. The RH sensors have built-in temperature measurement. There is a third RH sensor mounted in a shallow groove in the cross beam, facing the canvas. The inset, top right, shows the weave of the linen canvas and the ground layer attached to the far side

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