Let’s end # DarkMatterDay with a video of a single bubble nucleating in a # PICO40L dark matter bubble chamber. This is precisely the kind of behaviour that would result from # DarkMatter interacting with a detector like this. You expect a single, low-energy interaction nucleating a lone, isolated bubble. This is why it’s so critical to construct these with low radioisotope contamination, put the experiment deep underground, and still shield the hell out of it. https://chirp.cooleysekula.net/attachment/59ff680a667243a031d4b8b6de70fbceeba5b17a55c503e2880c84a2bd412799/view