Soap bubble for its soaps in 1886 using a painting by John Everett Millais of a child playing with bubbles. The Chicago company Chemtoy began selling bubble solution in the 1940s, and bubble solution has been popular with children ever since. According to one industry estimate, retailers sell around 200 million bottles annually. A bubble is made of transparent water enclosing transparent air. However the soap film is as thin as the visible light wavelength, resulting in interferences. This creates iridescence which, together with the bubble's spherical shape and fragility, contributes to its magical effect on children and adults alike. Each colour
The Return of the Dove to the Ark plan for the painting was to include the figure of Noah, as well as including several animals in the background. The final omission of these other figures is thought to have been due to his desire to have the painting ready for the Royal Academy exhibition of 1851. "The Return of the Dove to the Ark" was first put on public display at the Royal Academy in April 1851. Millais was surprised to learn that some Roman Catholics who viewed it believed it to be an allegory for the return of the country to the true faith. It was praised