The Rest Is Science

Michael hands Hannah a kendama, the Japanese cup-and-ball toy, and asks her to land a single catch. Then he brings out one built for him by Adam Savage of MythBusters and explains why a heavier kendama is a completely different physics problem.

A kendama looks like a children's toy. It is really a pendulum, a lesson in angular momentum and a catching problem borrowed from spacecraft docking. Michael and Hannah get into why the swing timing barely changes when the ball gets heavier, why the trick is to match the ball's velocity rather than grab at it, why bending your knees on the catch is doing real work, and why the paint finish on a kendama changes how it plays.

Then Hannah and Michael take on your questions: what would actually happen if you flew into Jupiter and kept going, whether there is a mathematical way to swim faster, and which books they'd hand an adult who wants to get back into maths after school ruined it.

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For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit https://cancerresearchuk.org/restisscience

Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ."

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Find The Rest Is Science all over the internet by ⁠⁠clicking here.⁠⁠

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Video Producer: Adam Thornton + Oli Oakley + Jack Meek

Animator: Sam Benson

Video & Social: Bex Tyrrell

Assistant Producer: Lucy Lipscombe

Producer: Simona Rata

Senior Producer: Lauren Armstrong-Carter

Chief Digital Officer: Samuel Oakley

Exec Producer: Neil Fearn
Learn more about your ad choices. Visit podcastchoices.com/adchoices

What is fire, and why does watching it hold our attention in a different way from scrolling on your phone?

Hannah Fry and Michael Stevens start with the science of a flame: why it glows, what its different colours reveal, and why fire is a series of chemical reactions rather than a single substance.

Then they travel back to a time before wildfires could burn on Earth, and ask how early humans learned to use and make it.

Could keeping a fire alive have helped our ancestors learn to plan and cooperate? And what happens when we replace the quiet pull of a hearth with the endless pull of a phone?

From candle flames to early human history and the psychology of attention, this is the story of fire, the space it occupies in our history and lives.

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For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit https://www.cancerresearchuk.org/our-research/rest-is-science

Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ.

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Find The Rest Is Science all over the internet by ⁠⁠clicking here.⁠⁠

-------------------

Video Producer: Adam Thornton + Oli Oakley + Jack Meek

Animator: Sam Benson

Video & Social: Bex Tyrrell

Assistant Producer: Lucy Lipscombe

Producer: Simona Rata

Senior Producer: Lauren Armstrong-Carter

Chief Digital Officer: Samuel Oakley

Exec Producer: Neil Fearn
Learn more about your ad choices. Visit podcastchoices.com/adchoices

The wait is finally over: Hannah Fry introduces Michael Stevens to her beloved fountain pen collection and the beautiful physics behind how fountain pens work.

From a £20 Lamy Safari to vintage Waterman and Montblanc pens, Hannah explains how capillary action, surface tension, air pressure and carefully engineered feeds control the flow of fountain pen ink. Michael tests the collection, chooses his favourite and discovers why the most expensive pen is not necessarily the nicest to write with.

Then Hannah and Michael answer your questions: which words are terrible at their jobs, how do aeroplane wings actually generate lift, and which moment in history would they most like to witness?

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For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit https://cancerresearchuk.org/restisscience

Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ.

-------------------

Find The Rest Is Science all over the internet by ⁠⁠clicking here.⁠⁠

-------------------

Video Producer: Adam Thornton + Oli Oakley + Jack MeekAnimator: Sam BensonVideo & Social: Bex TyrrellAssistant Producer: Lucy LipscombeProducer: Simona RataSenior Producer: Lauren Armstrong-CarterChief Digital Officer: Samuel OakleyExec Producer: Neil Fearn
Learn more about your ad choices. Visit podcastchoices.com/adchoices

Almost every human who has ever lived has one thing in common: they were born and died on Earth. Except for three people.

Hannah Fry and Michael Stevens uncover the extraordinary story of Soyuz 11, the Soviet cosmonauts who became the only humans ever to die in outer space, and what their deaths meant for the future of human spaceflight.But that raises a bigger question: what exactly is trapped on Earth, and what can escape?

Is the water left inside discarded plastic bottles being locked away forever? Is Earth itself slowly leaking water into space? Can you really trap a monkey simply because it refuses to let go of something shiny? And are your phone number, your name and every other possible sequence of numbers really hidden somewhere inside the digits of pi?

From space exploration and the Soyuz 11 disaster to Earth's water, animal behaviour and one of mathematics' biggest unanswered questions, Hannah and Michael investigate what gets trapped, what escapes, and what might have been hiding in plain sight all along.

-------------------

For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit https://cancerresearchuk.org/restisscience

Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ.

-------------------

Find The Rest Is Science all over the internet by ⁠⁠clicking here.⁠⁠

-------------------

Video Producer: Adam Thornton + Oli Oakley + Jack MeekAnimator: Sam BensonVideo & Social: Bex TyrrellAssistant Producer: Lucy LipscombeProducer: Simona RataSenior Producer: Lauren Armstrong-CarterChief Digital Officer: Samuel OakleyExec Producer: Neil Fearn
Learn more about your ad choices. Visit podcastchoices.com/adchoices

What if a single strange word could save you a fortune?

In this episode Michael opens up a Victorian telegram code book and explores how users compressed long messages into brief coded words to outwit the per word charge of the telegraph system.

Coded language turned everyday phrases about everyday events into something that looked like nonsense to outsiders, and why that secrecy was often a side effect of economy rather than espionage, and how operators learned to live inside this clipped new dialect of distance and delay.

-------------------

For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit https://cancerresearchuk.org/restisscience

Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ.

-------------------

Find The Rest Is Science all over the internet by ⁠⁠clicking here.⁠⁠

-------------------

Video Producer: Adam Thornton + Oli Oakley + Jack Meek

Animator: Sam Benson

Video & Social: Bex Tyrrell

Assistant Producer: Lucy Lipscombe

Producer: Simona Rata

Senior Producer: Lauren Armstrong-Carter

Chief Digital Officer: Samuel Oakley

Exec Producer: Neil Fearn
Learn more about your ad choices. Visit podcastchoices.com/adchoices