Here is a seemingly easy question: What is light? Discuss how light is used in crime scene.

Don't get tunnel vision on this particular discussion question, think about the three (3) R's. Think about 2 major pieces of equipment that utilize and/or generate light and how they work (explain) and what the purpose is for the light. Consider chemicals that might be used in crime scene as well.

As usual, be detailed, utilize proper citation, and apply what you are discussing. This will help you clearly demonstrate critical thinking and shed "light" on the practical nature of the simplicity, yet at the same time the complexity, of this question.