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> polyester film — a newer film type that can last 500 years How does one confidently establish that about tech that has been around for less than a century? N
by abeppu 3y ago
> polyester film — a newer film type that can last 500 years
How does one confidently establish that about tech that has been around for less than a century? Not saying it's wrong, but curious what should constitute convincing evidence.
- mrguyorama 3y agoTypically it's done through simulated aging. You expose the item to extremes of temperature and maybe light cycling or something, depending on the environment you want to certify or test it for. Chemistry is mostly deterministic, so this usually works pretty well.
- lm28469 3y agoThe plastic might survive 500 years but the images on it won't last anywhere as long. Getting old slides and negatives from your parents will show you that, most of them already faded or color shifted heavily. You still need controled temperature and humidity for that