Which of the following is NOT a possible effect when evidence interacts with various wavelengths of light?

The correct answer is based on the nature of how evidence interacts with light. Evidence can fluoresce, absorb, and reflect light, which are all common interactions seen in various materials.

Fluorescence occurs when certain substances absorb light at one wavelength and then re-emit it at a different, often longer wavelength. This property is frequently used in forensic science to detect specific substances at crime scenes, such as bodily fluids or trace evidence.

Absorption is another fundamental interaction where materials take in light energy, which can lead to an increase in temperature or result in the visible color of an object. This is an essential aspect of understanding how different materials can impact the visibility and analysis of evidence.

Reflection, on the other hand, is when light bounces off a surface, which is crucial for visibility. When forensic analysts assess scenes or pieces of evidence, they consider how light reflects off surfaces to both identify and document items effectively.

In contrast to these interactions, "alter" does not describe a specific physical process related to wavelengths of light. While evidence might be altered due to a variety of environmental factors, this is not a direct interaction related to how light functions with evidence. Therefore, identifying “alter” as the option that does not align with the described