In the process some of the mass of the hydrogen atoms is converted into energy in the form of light. The same process occurs in thermonuclear (fusion) bombs. In the Sun the process occurs in a controled manner.
â¢ POSTER CHILD (noun) The noun POSTER CHILD has 1 sense: 1. a child afflicted by some disease or deformity whose picture is used on posters to raise money for charitable purposes. Familiarity information: POSTER CHILD used as a noun is very rare.
Quick Answer. Use poster paint to decorate paper or cardboard surfaces, such as banners, posters and appliance box play houses for children. Preschoolers enjoy finger painting with poster paints, and adults appreciate their washable nature. Keep Learning.