Obscure Elements
Elements28 Sep 2016

Obscure Elements

In the final programme in our Elements series, Justin Rowlatt looks at the rarest and oddest members of the periodic table.

Selenium, bismuth, molybdenum, antimony, rhenium, hafnium, zirconium, tellurium, thallium, barium. What are they? And what are they used for?

Minor metals merchant Anthony Lipmann explains how he made a fortune tracking down a stockpile of one toxic element sufficient to kill millions of people - and sold it to Japanese camera manufacturers.

We set chemistry professor Andrea Sella a musical challenge to round off his elucidation of the periodic table, going out with a pyrotechnic bang.

And cosmologist Martin Rees explains why 85% of the matter in the universe isn't made up of chemical elements at all, but instead of "dark matter", whatever that is.

(Picture: Elements series planning board; Credit: Laurence Knight/BBC)

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Episoder(65)

Oxygen (O) - oxidation

Oxygen (O) - oxidation

The “element of life” also makes the air that we breathe a perilous and costly atmosphere in which to operate. Prof Andrea Sella of University College London provides presenter Justin Rowlatt with a c...

29 Jul 201538min

Cobalt (Co)

Cobalt (Co)

Cobalt, the metal in magnets and phone batteries, is synonymous with the colour blue. But what exactly are magnets, how do they work and where are they used? And is some of the cobalt being mined by c...

22 Jul 201546min

Copper (Cu) - electricity

Copper (Cu) - electricity

Copper has long been the metal of electricity generators and wiring. But presenter Justin Rowlatt asks whether new technologies herald the death of the old-fashioned electricity grid. Prof Andrea Sell...

25 Jun 201538min

Copper (Cu) - materials

Copper (Cu) - materials

Copper is the distinctive red metal in pots, pans and water pipes, and also plays a central role in whisky distillation. Presenter Laurence Knight and chemistry guru Professor Andrea Sella of Universi...

17 Jun 201545min

Boron (B)

Boron (B)

Boron is the mineral from the Wild West that stops glass from shattering and stops bullets in their tracks. Presenter Laurence Knight visits the Dixon Glass works to see why borosilicate glass is perf...

11 Jun 201542min

Gallium & Indium (Ga, In)

Gallium & Indium (Ga, In)

LED lighting, solar power and lasers are just some of the electronics revolutionised by two obscure chemical elements - gallium and indium. Laurence Knight hears from Mike Simpson of Philips why we wi...

3 Jun 201549min

Iron (Fe) - industrialisation

Iron (Fe) - industrialisation

Iron is the chemical element at the heart of steel, and by extension of industrialisation, so what does the collapse in iron ore prices say about the economic progress of China and India? Is the steel...

1 Apr 201531min

Iron & Manganese (Fe, Mn) - steel-making

Iron & Manganese (Fe, Mn) - steel-making

The two key ingredients that enabled the mass production of steel. We travel to Sheffield - the birthplace of modern steelmaking - to get up close to the technological mid-wife, a Bessemer converter. ...

25 Mar 201531min

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