21. In a laser or LED printer, modulated light is projected onto the drum surface to create the latent image . 22. A brief exposure to a negative produces a latent image , which is then made visible by a developing agent. 23. The size of a silver cluster in the latent image can be as small as a few silver atoms. 24. An'amplification'of the latent image occurs as the silver halides near the free silver atom are reduced to metallic silver. 25. In the process of making a stable latent image center, a smaller and less stable silver speck is made. 26. Prominent new features included a changed watermark, windowed security thread, latent image and intaglio features for the visually handicapped. 27. Photographic processing transforms the latent image into a visible image, makes this permanent and renders it insensitive to light. 28. Security features include a so-called latent image , which changes from one picture to another when viewed from different angles. 29. The latent image on a daguerreotype plate was developed by subjecting it to the vapor given off by salt water. 30. Therefore, photographic developer acting on the latent image is a chemical amplifier with a gain factor up to several billion.
