Chemical Elements
Caesium - the time-keeper
12 Apr 2019
A second, the basic unit of time, is defined by caesium, which is also useful for dating things. Find out more about caesium's role as a timekeeper, in ep 15 of Elemental with Allan Blackman from AUT.
…Cadmium - colour and quantum dots
8 Apr 2019
Cadmium has featured in red traffic lights, rechargeable batteries and now has a role in quantum dots, according to Allan Blackman, from AUT, in ep 14 of Elemental. Audio
Bromine - the colour purple and poison gas
5 Apr 2019
The story of bromine is one of the color purple, the Dead Sea and an early poison gas used in the First World War, says Allan Blackman from AUT, in ep 13 of Elemental. Audio