contrast variation

Contrast variation is a technique used in microscopy and imaging to enhance specific details of a sample. By adjusting the surrounding medium's properties—such as its light or color characteristics—the method makes certain parts of the sample stand out more clearly against the background. This allows scientists to better distinguish and analyze the structures or components within the sample. Essentially, it’s like changing the background color to make an object more visible, helping researchers see complex or subtle features more effectively.