Professor Hannah Fry

speaker

9,648 appearances 26 recordings 1 series first heard Mar 2026 last heard 2d ago

Professor Hannah Fry’s voice in public audio — every appearance, attributed to the second.

Trend

recordings per month · last 12 months

Recordings per month over the last 12 months — 26 in all, peaking in Sep 2026 with 8.

Appearances

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The Rest Is Science · Why Do We Like Staring Into Fire? · 27 Sep 2026 podcast

I have one of those wood burner things. matched

Um it's sort of a m middle class trophy in many ways. matched

Um having one of them in your house. matched

Anyway, the thing that's always really noticeable is the different colours that the flames matched

take on depending on how you change the oxygen supply. matched

Also depending on how how far into the burn process you are. matched

So right at the beginning, very yellow flame. matched

If you try and like choke off the oxygen supply, everything goes blue. matched

Until it gets really, really hot and then it becomes very red. matched

But what I'm hearing from you is that the different parts of the flame that you see all together in a candle, you're pushing what's in your wood burner into predominantly those states. matched

Go on. matched

Mm-hmm. matched

you haven't got floaty bits, right? matched

You don't have matched

You don't matched

I mean, 'cause you obviously still need some oxygen in there, but maybe what it's doing is it's it's not allowing there to be turbulence within the cavity. matched

It could be something stuff. matched

That makes the flame cleaner. matched

So wait, after that point it it leaves the visible light spectrum? matched

Okay. matched

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