Retracing the Chemistry of the First Photograph
StarEmperor writes: "CNN has
this article about experts trying to determine how the world's oldest known photograph (1826!) was produced." Even though the basic process is known, the details of how it was produced are lost.
Hrm. If I look closely at the top of the photo, I could swear I almost see clouds and sky...
And what is that thing in the center foreground? Is that a road partially obscured by shadow, or a rooftop?
And I can't see the pear tree at all...
--
viqsi - See "vixen"
If we do not change our direction we are likely to end up where we are headed.
When was the first celebrity fake jpeg and when was it posted to usenet?
My freshman Organic 1 professor taught me that.
I've hit Karma 50 and gotten a Score:5, Troll... I win!
There has been some Photoshopping (GIMPing?) done on that photo. In the original there is a thumb in the upper right corner of the picture.
I found a larger version of the picture here. I still don't see the tree. :-/
Some people consider this to be the oldest surviving photograph. There was a fashion in Italy where artists used a 'camera obscura' to help them draw accurately.
Photoreactive chemicals were known (could be derived from seaweed and silver). It would be a simple step to think of putting this chemical on canvas and "photographing" a statue or something immobile.
-Yarn - Rio Karma: Excellent
Perhaps instead of trying to use a lot of different means to determine the chemical makeup. (which has probably been altered to quite an extent by the development process, and the long term exposure to light) we should instead experiment to reproduse the results with chemicals we know to have been avalible back then.
I like replies better than Karma, even if they are flames, because that tells me I got someone thinking.
Follow along the wing of the house that takes up the left side of the picture. It ends in what looks like a square tower. The tree is the black blob just to the right of that tower. You can't see the trunk; it's obscured by foliage.
And the brethren went away edified.
World's earliest photo set to make £500,000 at auction
Turns out someone in France has been holding an even earlier (1825) Niepce photograph, and now they're selling it.
If all this should have a reason, we would be the last to know.