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.
Poster board can be used for a variety of projects, including school assignments, making signs and even holiday decorations. While there is a standard size for poster board, there are other sizes of poster board available to fit the needs of any project. Poster board typically comes in white, but has expanded to include a variety of colors.