How does Bluetooth work?

蓝牙是如何工作的?

CrowdScience

2026-06-20

26 分钟
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单集简介 ...

CrowdScience listener Rachel uses Bluetooth headphones on her cycle to work, seamlessly playing music from her phone without using wires. But how does this technology send information through the air? To find out, Rachel and presenter Caroline Steel travel to Cambridge in the UK to meet telecommunications expert William Webb. He explains what Bluetooth signals actually are – and demonstrates why their properties are linked to the invention of leaky microwave ovens. Caroline speaks to Jaap Haartsen, the inventor of Bluetooth, who reveals the hidden meaning of its logo, and what the name has to do with an ancient Viking king. And she learns how a new flavour of “low energy” Bluetooth is having an unexpected application: helping ecologists like Damien Farine understand animal behaviour. Which leads her to an old tobacco barn in Switzerland, to meet researcher Bettina Almasi and her team – along with some very cute baby barn owls. Presenter: Caroline Steel Producer: Anand Jagatia Editors: Ben Motley & Ilan Goodman (Photo:Composite photo collage of hands hold phone device internet antenna connection technology bluetooth - stock photo- Credit: Deagreez via Getty Images)
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  • Welcome to Crowd Science from the BBC World Service, the show that answers your science questions.

  • I'm Caroline Steele and I'm standing in a barn in Switzerland,

  • watching two scientists run up a rickety ladder to gather some very precious cargo.

  • So we have the four juvenile owls now here in our close bags and we will now start to measure them.

  • And take them.

  • Oh my gosh so in that space of time like a minute you caught four owls.

  • Baby owls.

  • And you are carrying three dead rodents?