Assuming you mean the first to be made permanent, that would be Joseph Nicéphore Niépce, circa 1826.
Because the images can easily be changed from the original, and there is no negative to which they can be compared.
Any infra-red image I've seen displays the opposite. In B&W, that which reflects more IR is whiter in the print, darker in the negative. In color, it's anybody's guess as to how it will reproduce. Note that I assume you are not referring to thermal images, so neither am I.
Well, there is always Google Images, Yahoo! images, Ask (Jeeves) images, Shutterstock, Bing images and/or DeviantART stock images. You could also get inspiration from works published on Artician or just borrow a book from your local library filled with various images related to your topic. Finally, maybe just type into a search engine of your choice 'stock images' or 'stock images of' followed by your subject. I hope I helped.
Royalty free images can be found online. There are a lot of social media sites that shares royalty free images. These images are free of cost and do not have to be bought.
For example digital computers to edit images, (digital) cameras to obtain images or computers to render them.
A photo negative scanner is used to scan negatives. Scanning negative photos is used to create digital images of standard photos. These images can be used for recreating the images, or for storage of images in a database.
The paper negative process was attributed to William Henry Fox Talbot in 1839. Talbot developed this method as an early form of photography using paper coated with silver iodide to produce negative images.
Pictures of negative space can be found online at the Google Images website. Once on the page, type "pictures of negative space" into the search field and press enter to bring up the images, then click on "Images" in the top navigation to bring up the images.
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Euclid
Up until the late 1800's, all photo images were negatives. The first person known to have recorded an image on a photosensitive surface was Thomas Wedgewood, in 1800.
1999
It was early 1830s. He experimented with various types of process to get images. It was he that invented the negative positive process using paper negatives.
She he invented the photographic print and the negative washing machine.He invented the photographic print and the negative wash machine!
india
The first projector was invented by Christiaan Huygens in the 1650s. It was called the Magic Lantern and was made to project images on a surface.
A tool invented by Galileo (who invented telescope) to help his math students solve problems. Go to google images for picture.