Roundel for use in optical experiments Robert Waring Darwin
Product images of Roundel for use in optical experiments
zoom
Roundel for use in optical experiments
Plate 9 figure 2 from the paper "New experiments on the ocular spectra of light and colours", by Robert Waring Darwin, Philosophical Transactions of the Royal Society, vol.76 (1786), pp.313-348. Roundel intended for use in exploring colour perception. In the written experiment circular pieces of silk are overlaid in the sequence blue (outer), yellow, pink, green and indigo (inner) with a central spot. "look steadily for a minute on this central spot, and then closing your eyes, and applying your hand at about an inch distance before them...you will see the most beautiful circles of colours that imagination can conceive, which are most resembled by the colours occasioned by pouring a drop or two of oil on a still lake on a bright day."
Original: watercolour on paper. 1785
- Image reference: RS-9947
- The Royal Society
Discover more
More by the artist Robert Waring Darwin.
Explore the collection Colour theory.
Our prints
We use a 240gsm fine art paper and premium branded inks to create the perfect reproduction.
Our expertise and use of high-quality materials means that our print colours are independently verified to last between 100 and 200 years.
Read more about our fine art prints.
Manufactured in the UK
All products are printed in the UK, using the latest digital presses and a giclée printmaking process.
We only use premium branded inks, and colours are independently verified to last between 100 and 200 years.
Delivery and returns
We print everything to order so delivery times may vary but all unframed prints are despatched within 2-4 days via courier or recorded mail.
Delivery to the UK is £5 for an unframed print of any size.
We will happily replace your order if everything isn’t 100% perfect.
