Episode 7

Image for Episode 7Not currently available on BBC iPlayer

Bang Goes the Theory, Series 5 Episode 7 of 8

Duration: 30 minutes

Dallas investigates a potential global helium shortage, Dr Yan tests shoppers on how much they know about radiation, and Liz tries out the new airport security technology that can see beneath your clothes.

  • Hands up who's concealing a weapon?

    Hands up who's concealing a weapon?

    Liz has to hand it to the new airport security 'body scanners' that detected a well concealed (and intentionally placed) weapon on her person.

  • Ballooning around #1

    Ballooning around #1

    Dallas has always dreamt about a balloon ride over the desert. Dallas, we know you don't weigh much, but might we suggest a *few* more balloons to help you on your way?

  • Ballooning around #2

    Ballooning around #2

    Is it cat, a balloon or a... scientist attempting to explain some intriguing science? See for yourself in the video above called 'Puzzle: Two balloons on a hose'.

  • Paint it blue?

    Paint it blue?

    No it's not a snail in need of a makeover. This is the beginnings of Ruth Brooks' science experiement that saw her become the 2010 winner of Radio 4's So You Want To Be A Scientist? competition.

    Follow the link above to watch Ruth talk about her award winning experiment.

  • What happens to a helium balloon in a car?

    What happens to a helium balloon in a car?

    Dr Yan was once asked: "What happens to a helium balloon in a car as you accelerate, brake or turn?" so, to find out and explain the answer, he went and made a video.

    Watch Dr Yan's answer to the helium ballon in the car question

Credits

Presenter
Liz Bonnin
Presenter
Liz Bonnin
Presenter
Dallas Campbell
Presenter
Dallas Campbell
Presenter
Jem Stansfield
Presenter
Jem Stansfield
Series Producer
Paul King
Series Producer
Paul King

Broadcasts

The Open University

The Open University

If Bang stirs your interest in science then visit The Open University and discover more.

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