Tootfinder

Heard a particular application of the definition of Planck's constant I wasn't aware of that made more real for me "we just can't see that small" and drove home that it was not about "quantiziation of spacetime".
I knew Planck energy was where a photon could become a black hole - but "our particle smashing makes black holes past a certain point" didn't say much to me about spacetime itself.
But today I was reading and saw where someone pointed out that beyond a certain scale, we use photons and light for studying reality - and that a photon with Planck wavelength by definition would have Planck energy.
So to make light of the right wavelength to study features of reality smaller than Planck length, you'd -also- trigger the black hole behavior.
For some reason this explanation sits _way_ better in my head. I get they're all related, I'd just never heard this angle of it in this particular way before.

The Shape of AGN-Driven Winds in the Seyfert Galaxy NGC 3516
Jacob Tutterow, Nicholas Ferree, D. Michael Crenshaw, Julia Falcone, Maura Kathleen Shea, Travis C. Fischer, Beena Meena, Mitchell Revalski, Kesha Patel, Madeline Davis
https://arxiv.org/abs/2509.06476

The Shape of AGN-Driven Winds in the Seyfert Galaxy NGC 3516
Active galactic nuclei (AGN) are known to drive ionized gas into their host galaxies, which may affect the evolution of both the central supermassive black holes and their hosts. In the case of NGC 3516, a nearby Seyfert 1 galaxy, these AGN winds have historically proven difficult to disentangle from galactic rotation. Using long slit spectroscopy at multiple position angles from the Hubble Space Telescope Space Telescope Imaging Spectrograph and the Apache Point Observatory Kitt Peak Ohio Stat…