Video – Time-lapse Photography of Silver Tarnishing From Exposure to Eggs

Transcript

• Transcript of the video "Time-lapse Photography of Silver Tarnishing From Exposure to Eggs"

  Length of video: 00:00:56

  No narration during this video.

  The Canadian Heritage signature appears, followed by the Canadian Conservation Institute signature.

  At the beginning of the video, a boiled egg, cut in two, sits at the top of the frame and another is at the bottom. In the middle of the frame there is a silver-plated spoon above a sterling silver knife. The spoon and knife are turned over so the engravings are visible on the back. The time lapse video shows the two utensils over a 90-minute period with photographs taken at 1-minute intervals.

  First, the utensils turn from silver to a shade of amber. The colour is lighter on the silver-plated spoon than the sterling silver knife. Next, the knife turns brown while the spoon darkens to a deeper amber colour. Then blue discolouration appears on the knife and spots on the spoon turn brown. As the blue discolouration spreads on the knife, the spoon turns a darker brown. Finally, purple areas appear beside the blue on the knife and the spoon turns a reddish brown.

  Canada wordmark appears.

  
  

  This video was created by the Canadian Conservation Institute and is part of the Understanding how silver objects tarnish learning resource.