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Most of the visible transformation happened during the first week. By Day 30, the image had become slightly lighter and more uneven, with further loss of contrast and changes to the surface of the paper. The later changes were slower and less dramatic, but the faces remained clearly recognizable. | Most of the visible transformation happened during the first week. By Day 30, the image had become slightly lighter and more uneven, with further loss of contrast and changes to the surface of the paper. The later changes were slower and less dramatic, but the faces remained clearly recognizable. | ||
[[File:Slide-.jpg|center|thumb|467x467px|[[File:Slide04 Kopie.jpg|center|thumb|437x437px]]]] | [[File:Slide-.jpg|center|thumb|467x467px|[[File:Slide04 Kopie.jpg|center|thumb|437x437px|[[File:3 phase.mp4|center|thumb]]]]]] | ||
== Closed Jar Sample == | == Closed Jar Sample == | ||
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[[File:Jar Sample 30days.mp4|thumb]] | [[File:Jar Sample 30days.mp4|thumb]] | ||
The following video documents the sample after 30 days. The transformation remained gradual. The image was still visible through the water and glass, while sediment and prolonged contact with the water continued to affect the paper. As in the earlier stage, there was little clearly visible biological activity; the changes appeared to result mainly from immersion and material degradation. | The following video documents the sample after 30 days. The transformation remained gradual. The image was still visible through the water and glass, while sediment and prolonged contact with the water continued to affect the paper. As in the earlier stage, there was little clearly visible biological activity; the changes appeared to result mainly from immersion and material degradation. | ||
== Comparative Immersion Test == | |||
To explore faster forms of image degradation, I prepared five copies of the same portrait. Each copy was immersed for approximately four hours in a separate mixture of water and one additional substance: Meister Proper all-purpose cleaner, Frosch dish gel, Brennspiritus, sodium hydroxide (NaOH), or acetone. | |||
After four hours, the samples showed different kinds of transformation. The Meister Proper, dish gel and Brennspiritus mixtures caused relatively subtle changes in contrast, tone and surface texture, while the faces remained clearly visible. The NaOH mixture produced the strongest physical damage, including tearing, creasing and a partial breakdown of the paper structure. The acetone mixture affected the image differently: the paper remained more intact, but the print developed a strong bluish tonal shift and became visually softer. | |||
The comparison showed that the same image can be altered in different ways depending on the material used—not only through fading, but also through changes in colour, surface and the physical structure of the paper. | |||
[[File:5 Samples Test 02.png|center|thumb|452x452px]] | |||
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