Originally Posted by wogoga
But sunlight is not
coherent. And in order for light to interact directly with itself, that would require electromagnetic fields to be nonlinear. There is no evidence that either occurs.
Except that Maxwell's equations for electromagnetism are explicitly linear. They would need to be wrong in order for photons to interact directly. There's no evidence they are. I don't think you really understand what you're proposing.
Not so. They are easy to predict: they have the same local bonding structure as graphite. The difficulty was manufacturing and detecting