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Imagine something which slowly fades with light, like paint. Taking a photo every day is work, stuff can break. A passive sensor like paint would just sit ther
by dist-epoch 3y ago
Imagine something which slowly fades with light, like paint.
Taking a photo every day is work, stuff can break. A passive sensor like paint would just sit there.
- izzydata 3y agoBut how can they be so sure the paint won't fade completely after 1000 years? It could be gone after 10 years. Perhaps you could check on it as long as you don't move it even a millimeter.
- ruined 3y agothe chemistry of photography is well-researched and involves simple calculations. it comes in many flavors, the product is repeatable and testable, and can be made very stable.
- dist-epoch 3y agoWe have 1000 years old buildings around. You can study parts which were in the sun versus shadow.