Steve Mould is one of the few large science communicators whose material regularly covers resonance and standing waves, so his handles come up often. They are inconsistent across platforms, and the near-misses are traps.
The live ones: @stevemouldscience on Instagram, 483,000 followers and 409 posts, bio "Science videos"; @MouldS on X, 30,704 followers and 4,360 posts since 2008, with a bio linking youtube.com/stevemould; and @stevemould on TikTok, 360,400 followers and 5.5 million likes.
The traps: @stevemould on Instagram is a dormant account with 14 followers and no posts, and @stevemould on X belongs to a different Steve Mould in Worthington, Ohio, with 10 followers. We could not read any of the feeds, so we make no claim about how much cymatics appears — only that these are the correct doors.