If the temperature of the developing solution is slightly below normal, how can proper density be achieved?

To achieve proper density in radiographic films when the temperature of the developing solution is slightly below normal, increasing the developing time is necessary. The developing process relies on the chemical reactions that occur at specific temperatures; if the temperature is lower than optimal, these reactions are slowed down.

Extending the time the film is in the developer allows for a more complete reduction of the exposed silver halide crystals, which darkens the image and enhances its density. Without this adjustment in timing, the images could turn out lighter than desired, leading to a loss of detail and diagnostic quality.

In contrast, altering the fixing time has no impact on the density development; it only affects how well the unexposed crystals are removed after development. Furthermore, reducing the developing time would lead to underdevelopment, exacerbating the density issue. Therefore, extending the developing period is the most effective approach to compensating for lower developing solution temperatures.