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 1925, a total of 598 performances. It was the first of a sequence of twelve "Aldwych farces" presented at the theatre until 1933, mostly original farces written by Ben Travers. By contrast with later plays in the series, in which Walls played worldly and sometimes shady characters, with Ralph Lynn as his naïve associate, in "It Pays to Advertise" Walls's character is upright and conventional, and Lynn is the manipulative schemer. From the revised (London) version of the play. Mary Grayson, secretary to the soap magnate, Sir Henry Martin, is awaiting the arrival of his son, Rodney. While she waits,