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From the article: you can see with the naked eye Also from the article: long exposure photograph Only one of those is correct. Naked eyes can't do long exposu
by ebg13 7y ago
From the article: you can see with the naked eye
Also from the article: long exposure photograph
Only one of those is correct. Naked eyes can't do long exposures.
- dylan604 7y agoYou can use your naked eye to view the long exposure photo?
- ebg13 7y ago+_+
- FreakyT 7y agoNot necessarily; cameras in general tend to have much worse low light performance than our eyes. Take, for example, the night sky. You can easily see the stars with the naked eye, but try getting them to show up in a photo. You’ll almost certainly need a long exposure.
- ramraj07 7y agoHe didn't say he saw it with his naked eye though. However, at least by some metrics, the human eye can detect even a single photon. So if he shut off all other sources of visible light in the room, and sat there for a bit, he should start seeing the light (assuming he's young, red light perception decreases the older you get). But then, for this to work, the only detail you need on your side is proof that only one atom is emitting light.
- lisper 7y agoIt is true that naked eyes can't do long exposures. It is not true that you can't do a long exposure of something that is also visible to the naked eye.
- mortenjorck 7y agoIn theory, at least, the atom could be emitting enough light and oscillating over a large enough area that persistence of vision could result in a visible dot to the naked eye.
- mattkrause 7y agoThis article says it's barely perceptible to the naked eye: https://www.livescience.com/61763-single-atom-ion-trap-photo.html https://www.livescience.com/61763-single-atom-ion-trap-photo... People can detect (though not very reliably) single photons hitting a photoreceptor or ~7 of them entering the eye once they're totally dark-adapted, so that almost has to be true.
- Ono-Sendai 7y agoI believe that's what's happening in this case. From https://www.livescience.com/61763-single-atom-ion-trap-photo.html https://www.livescience.com/61763-single-atom-ion-trap-photo... "This glow would be barely perceptible with the naked eye but becomes apparent with a little camera manipulation."
- Craighead 7y agoIf you spend an entire night you can eventually make out Andromeda