Dr Chris Smith
Question of the Week, from the Naked Scientists
Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...
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Dr Chris Smith
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Último episódio
31 de out de 2025
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Episódios
Why do musical instruments sound different when playing the same note? 07.05.2017 4:26
Why does the same musical note sound different when played on different instruments? Why does, for example, an A-sharp on a piano sound different to an A-sharp on a trumpet? Like this podcast? Please help us by supporting the Naked Scientists
Why are blue lights harder to see? 23.04.2017 3:46
David wanted to know why the blue lights he saw in Christmas trees were often harder to make out. Izzie Clarke spoke to Dr George Dobre from Kent University to shed some light on the issue. Like this podcast? Please help us by supporting the Naked Scientists
What sound does a falling missile make? 23.04.2017 3:52
Listener George wondered why, in films, missiles make a descending sound as they fall? And what would it sound like if it fell into a bottomless pit? Izzie Clarke asked Peter Main from King's College London to explain what actually happens... Like this podcast? Please help us by supporting the Naked Scientists
Whats the most efficient way to run up steps? 26.03.2017 4:15
We investigate the most energy-efficient way to climb stairs: one or two at a time? Like this podcast? Please help us by supporting the Naked Scientists
Can mosquitoes transmit HIV? 20.03.2017 4:18
Can mosquitoes transmit HIV from one person to another? Ricky Nathvani investigates... Like this podcast? Please help us by supporting the Naked Scientists
When should I replace my bulbs with LEDs? 13.03.2017 3:42
Ricky Navthani has been trying to shed some light of Philip's question, about when he should replace his old CFL lights for more efficient LEDs. Like this podcast? Please help us by supporting the Naked Scientists
How Does My Tea Become Pee? 27.02.2017 3:26
When you drink tea and use the toilet shortly afterwards, is that the same liquid? Like this podcast? Please help us by supporting the Naked Scientists
Could we see into the past? 20.02.2017 3:31
Listener David got in touch to ask about whether mirrors in space could show us what Earth was like a million years ago. Graihagh Jackson asked Cambridge's Anna Hourihane to explain how this might work... Like this podcast? Please help us by supporting the Naked Scientists
How did birds survive the dinosaur mass extinction? 13.02.2017 3:21
If birds are dinosaurs, why didn't they get killed by the asteroid 60 million years ago? Tom O'Hanlon put Fay's query to David Norman from the University of Cambridge. Like this podcast? Please help us by supporting the Naked Scientists
Why are the poles north-south? 24.01.2017 3:25
Listener Tim got in touch to ask: Why do the poles go north-south as opposed to east-west? Graihagh Jackson spoke to Imperial College's Stuart Higgins to find out... Like this podcast? Please help us by supporting the Naked Scientists
Do Ants Feel Pain? 23.01.2017 4:13
Do ants or other insects feel pain in the same way as humans do? And what does it have to do with robots? Tom Crawford gets some ant-sight from the University of York's Eleanor Drinkwater... Like this podcast? Please help us by supporting the Naked Scientists
What Would Peeing on the Moon Look Like? 16.01.2017 5:18
What would peeing on the moon look like? Is it even possible? Tom Crawford puts this astronomical question to Dr. Chris Messenger from the University of Glasgow... Like this podcast? Please help us by supporting the Naked Scientists
Why doesn't water burn? 05.12.2016 4:41
Water contains hydrogen and oxygen, both of which are important in combustion, so why is it used to put out fires? Why doesn't water burn? Graihagh Jackson put this to chemist Peter Wothers from the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists
Why does a broken magnets form two new ones? 28.11.2016 4:03
Why is it when we break a magnet in half, we get two new magnets? Why don't we just get separate north and south poles formed? Liam Messin set out to find the answer with Tim Boyd, a Cambridge undergraduate... Like this podcast? Please help us by supporting the Naked Scientists
Can light exert a force to move an object? 23.10.2016 3:40
Why don't you get thrown backwards when you switch on your torch? Kerstin Gopfrich made her way to the Nanophotonics Centre in Cambridge to find out from Dr. Anna Lombardi. The answer to Matt's question may blow you away... Like this podcast? Please help us by supporting the Naked Scientists
How much younger would you be after 50 years on Jupiter? 15.10.2016 4:19
Could a jaunt to Jupiter be the physics-version of anti-wrinkel cream? This week, Kerstin Gpfrich convinced physicist Dr Stuart Higgins to go on a mission to answer Troy's question... Like this podcast? Please help us by supporting the Naked Scientists
Does regular hand soap kill germs? 09.10.2016 3:12
This week, Connie Orbach has been cleaning up, answering Dale's question he sent in on Facebook: does soap really kill off germs?, with the help of Cherly Trundle from Addenbrooke's hospital infection control team. Like this podcast? Please help us by supporting the Naked Scientists
Could nuclear testing cause earthquakes? 25.09.2016 4:22
To get a handle on this shaky question Connie Orbach called in Dr Alex Copley from Cambridge University's Department of Earth Sciences... Like this podcast? Please help us by supporting the Naked Scientists
Do animals experience the placebo effect? 18.09.2016 3:53
Joshua asked us whether animals could ever experience the placebo effect. To find out, Laura Brooks spoke to Eleanor Drinkwater, researcher in animal behaviour at the University of York... Like this podcast? Please help us by supporting the Naked Scientists
Why does line drying make clothes rough? 11.09.2016 3:49
Kevin got in touch ask why clothes dried on a washing line can end up feeling rough, crunchy and stiff... To find out, our Laura Brooks contacted Neil Lant at the Fabric and Home Care research and development division of Proctor and Gamble, who make Lenor fabric softener. Like this podcast? Please help us by supporting the Naked Scientists
Can we unlearn something that we have already learned? 21.08.2016 3:16
It is not only learning that can appear to be quite hard; it's unlearning that we struggle with. How do we unlearn? Is there any technique for unlearning things? Claire Armstrong put this to neuroscientist Laura Ford, from the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists
If we slice the earth in half what would it look like from space? 31.07.2016 4:09
Lucka Bibic spoke to Prof Marian Holness from University of Cambridge to take her through Robert's question... Like this podcast? Please help us by supporting the Naked Scientists
Why does our stomach grumble when we are hungry? 24.07.2016 4:16
This week, Natasha from Australia wrote in to ask why her stomach grumble when she is hungry. Lucka Bibic enlisted Dr Roshini Raj from Medical Trinity Center in New York to find out what causes the rumbly in our tumbly! Like this podcast? Please help us by supporting the Naked Scientists
How did the moon get its markings? 17.07.2016 4:17
Listener Loot got in touch to ask how the moon got its markings. Claire Armstrong looked towards the heavens for the answer and spoke to the Open University's planetary expert Professor David Rothery. Like this podcast? Please help us by supporting the Naked Scientists
Did the cavemen have names? 10.07.2016 4:43
Listener Kat got in touch to ask if cavemen really did have names and when did humans start naming each other. Lucka Bibic went in search of cavemen's names with the Professor of Linguistics at MIT, Shigeru Miyagawa. Like this podcast? Please help us by supporting the Naked Scientists
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