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Copyrighted  image Icon Copyright: Production team
Sacrificial Metals article icon

Science, Maths & Technology 

Sacrificial Metals

In the Rough Science programme 'The Reef', the Rough Scientists constructed a burglar alarm to protect the delicate coral reef off the island of Chumbe. They strung out a wire across the surface of the water to mark out a no-go region for boats. If a boat crossed the line the circuit was completed and the alarm sounded. Being an important nature reserve this had to be powered by an environmentally friendly source – wave power or sunlight. Rough Scientist Mikey B was given the challenge of stopping the wire rusting over time. He decided to use a lump of magnesium as a sacrificial electrode. To find out more about how magnesium stops iron rusting and how it is used to protect oil drilling platforms and boats, read this extract from the second level OU course Our Chemical Environment (ST240).

Article
Creative commons image Icon Dennis Mojado under Creative Commons BY-ND 4.0 license
OpenLearn Live: 4th July 2016 article icon

TV, Radio & Events 

OpenLearn Live: 4th July 2016

What happens when iron meets oxygen.

Article
Copyrighted  image Icon Copyright: Production team
Collapse at Kinzua: Evidence for Tay audio icon

Science, Maths & Technology 

Collapse at Kinzua: Evidence for Tay

The collapse of the Kinzua Rail viaduct revealed what might be the crucial clue to solving an engineering mystery dating back to 1879. Part 3: The Evidence for Tay

Audio
5 mins
Copyrighted  image Icon Copyright: Dundee Central Library
Collapse at Kinzua: Acknowledgements article icon

Science, Maths & Technology 

Collapse at Kinzua: Acknowledgements

Acknowledgements to those who helped in the making of this feature

Article
Copyrighted  image Icon Copyright: Production team
Collapse at Kinzua: Corrosion damage audio icon

Science, Maths & Technology 

Collapse at Kinzua: Corrosion damage

The collapse of the Kinzua Rail viaduct revealed what might be the crucial clue to solving an engineering mystery dating back to 1879. Part 1: Corrosion damage

Audio
5 mins
Copyrighted  image Icon Copyright: Production team
Collapse at Kinzua: Tornado audio icon

Science, Maths & Technology 

Collapse at Kinzua: Tornado

The collapse of the Kinzua Rail viaduct revealed what might be the crucial clue to solving an engineering mystery dating back to 1879. Part 2: Tornado

Audio
5 mins
Copyrighted  image Icon Copyright: Production team
Rough Science 5 Zanzibar: Mike Bullivant's diary: The Reef article icon

TV, Radio & Events 

Rough Science 5 Zanzibar: Mike Bullivant's diary: The Reef

Mike Bullivant's diary about the challenge for the Reef programme, part of the fifth BBC/OU TV series Rough Science, based in Zanzibar

Article
Copyrighted  image Icon Copyright: Production team
Rough Science 5 Zanzibar: Video extras: The Reef video icon

TV, Radio & Events 

Rough Science 5 Zanzibar: Video extras: The Reef

Follow Mike in this exclusive video extra as he grapples with the corrosive effects of seawater, as part of the fifth BBC/OU TV series Rough Science, based in Zanzibar

Video
5 mins