Traditional Culture Encyclopedia - Photography major - What does reverse phase mean in Photoshop?

What does reverse phase mean in Photoshop?

"Inversion" refers to the color and tone inversion of an image. In the past, the negative of a camera was the reverse of a printed photo. For example, black turns white, blue turns yellow, and red turns green. ?

Photoshop can see "reverse phase" when you adjust the image, and the shortcut key is CTRL+I.