> Black Square was not simply a two-dimensional surface, parallel to a single wall and projecting outwards from it in one direction. Judging from the way it was displayed when first exhibited in 1915 — across the corner of the room (like a Russian icon) and as high up as possible — it was required to project from two walls and the ceiling, i.e. in three dimensions, embracing the room over which it presided as a cubic space.
Black Square’s artistic merit is precisely because it was intended to occupy the space in the room that an icon traditionally would, and implied the absence (or rejection) of God.
Malevich even wrote an essay "Бог не скинут: Искусство, церковь, фабрика" (God is not thrown down: Art, church, factory) in which he argued that god exists because it is impossible to prove otherwise.
From this essay it is possible to conclude that Malevich in Black Square painted god as he imagined it. He wrote that since the seventh day of creation god rests and does nothing. That is why it appears as if god does not exists. Black Square depicts nothing.
As such, while more technical, than conceptual or historical, there are now blacks that absorb light to degrees that were impossible before and are magical to see, even in pure sunlight. In 2016, an Indian-born British artist named Anish Kapoor was given exclusive rights to use Vantablack, the darkest material in the world with an absorption rate of 99.96%; Black 3.0 and Musou Black, which absorption rates are lower were created in response to Kapoor being only artist allowed to use Vantablack. To see examples, just Google keywords like: blackest black, vantablack vs black 3.0 vs musou black.
https://stuartsemple.com/project/black-v1-0-beta-worlds-matt...
Kapoor's response was to surreptitiously get a pot of Black 3.0, dip his middle finger in it, and take a photo of that finger flipping the bird.
https://www.theguardian.com/artanddesign/shortcuts/2019/aug/...
Here’s the photo:
https://www.instagram.com/p/BOWz73wgj7R/
This Wired story covers the topic in detailed:
https://www.wired.com/story/vantablack-anish-kapoor-stuart-s...