This is the best summary I could come up with:

“Every time I give a talk and I say, ‘Surprisingly, adults can tell the difference between hot and cold water,’ people just go like this,” said Tanushree Agrawal, a psychologist who, during a video call, mimicked audience members shaking their heads no.

But research she completed at the University of California at San Diego demonstrated that three-fourths of the participants in her experiments could in fact detect the difference.

However, Xiaotian Bi, who earned a Ph.D. in chemical engineering last year from Tsinghua University in Beijing, offers a new explanation in a paper he and colleagues published in March on the arXiv website.

But Joshua Reiss, a professor of audio engineering at Queen Mary University of London, who has also studied the acoustics of hot and cold water, said he was “on the right track, for sure.”

He produces and stars in his own popular science videos, and decided that the sounds water makes at different temperatures was a good topic.

You can observe this in waves, which glide along silently until they break, at which point they fall and trap air that produces noise as the bubbles resonate briefly within the water.

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