I don't know about cool, but I made this black and gold display of Ra on the sol...

		at_a_remove on Aug 7, 2023 \| parent \| context \| favorite \| on: Ask HN: What's the coolest physical thing you've m... I don't know about cool, but I made this black and gold display of Ra on the solar barque, versus the serpent Apep, for the solar eclipse here.