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
It Pays to Advertise with his father, using Peale's skill as a publicist to market "the most expensive soap in the world". Sir Henry has never gone in for advertising to any extent, and is inclined to pooh-pooh it. The problem is that Rodney has no capital to fund the necessary factory. The Comtesse returns. She addresses Rodney as if he were Sir Henry. Rodney's French is adequate for him to understand that she wishes to acquire the rights to sell his father's soap in France ("mon père's soap – not Pears', "father's""). Instead he sells her the French rights to his new soap.