Over The Rainbow

Episodes

1. 10

   The Colour of Life

   You'll be green with envy if you miss this podcast all about the colour green. Malachite was one of the earliest green pigments and a substantial source was the Great Orme in North Wales (the largest prehistoric mine in the world). Green is also the most dangerous of colours. Scheele's Green may...

   Apr 2, 2021

   42m
2. 9

   The Colour of Sunshine

   The Over The Rainbow team discuss the colour yellow. Yellow Ochre was one of the earliest pigments used by mankind. Orpiment was also widely used in antiquity despite it being based on arsenic and being poisonous. Yellow has also long been an important colour culturally. The Greeks - starting…

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   Mar 25, 2021

   38m
3. 8

   The Colour of Trust

   Steve, Helen and Huw tell you everything they know about the colour blue. Feeling blue? Then this podcast is just for you. Early naturally occurring blue pigments were hard to come by. However, ultramarine was a rare exception, made by grinding the mineral lapis lazuli. It was the finest and most...

   Mar 13, 2021

   42m
4. 7

   The Colour of Love

   The Over The Rainbow team kick off The Colour of ... series with red - the colour of love. It was one of the earliest naturally occurring colorants of course; red ochre. Red ochre was used extensively in cave paintings 60,000 years ago or more. These incredible and ancient works of art remain...

   Mar 4, 2021

   43m
5. 6

   Pretty in Pink

   In the last of the series the team discuss colour in fashion are joined by fashionista Caroline. Listen to this podcast if you want to find out why so many top fashion designers use colour in an extravagant way in their designs but personally wear black. Is it because they are afraid of colour?…

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   Feb 19, 2021

   46m
6. 5

   Extraordinary Facts Relating to the Vision of Colours

   John Dalton was the first person to systematically explore colour blindness (more appropriately called colour deficiency since the vast majority of people with this condition can see colour but have poor colour discrimination. He presented a famous paper - Extraordinary facts about colour vision…

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   Feb 12, 2021

   45m
7. 4

   Red and Green Make Yellow

   It's your first day at school and the teacher says 'I'd like you to paint a picture of where you live', so imagines Huw and this begins a dive into the topic of colour mixing. Colour mixing is a widely misunderstood topic. In fact, it is not actually possible to mix colours per se. Colours are...

   Feb 3, 2021

   44m
8. 3

   Does Red Make The Heart Beat Faster?

   Does colour and light affect our health and wellbeing? It it really true that red makes the heart beat faster? And what happens to you when you are placed in a pink room? Late-night colour chat. The podcast starts with a discussion about what type of colour vision a unicorn would have if they...

   Jan 28, 2021

   43m
9. 2

   When Did Humans First See Colour?

   When did humans first see colour? Trichromacy seems to have been around for at least 30 million years. Our very early ancestors, however, were probably nocturnal and had uv vision. It is thought that about 80 million years ago we developed sensitivity at the longer wavelengths, became dichromats...

   Jan 18, 2021

   35m
10. 1

    Can Dogs See Colour?

    Late-night discussion about the colour vision of dogs, shrimp, bees, cows, bulls and many more. Do dogs see in colour? Are bulls really enraged by the colour red? Does colour even exist? Dogs are dichromats; that means they have two types of light-sensitive cells (cones) in their eye. Most humans...

    Jan 12, 2021

    33m