Lighting can impact in both biological and psychological ways. Good lighting can either induce good sleep or disturb the sleep cycle. A good amount of lighting can reduce depression by making a bright entry into our life. Lighting does not have to be always bright.
Dim lights can create a good mood as well. For instance, dim light in the dining area can create a nice ambiance for dinner. Lighting can create a good mood as well as destroy your good mood.
Lighting can influence individual emotions. Warm lights boost calming effects whereas cool lighting can create alertness and improve concentration. Different types of lights are used for various purposes. If you have a picture to focus on, you can use lights that aims to focus the points. If you are indeed searching for needing light in a wide space, you can choose lights that cover wider angles. There is ambient light, mood lighting, and task lighting that is done according to any purpose of lighting.
There are various types of lighting effects as well. Downlighting, Uplighting, Wallgrazing, Spotlighting, and perimeter lighting. And for different spaces, individual lighting is designed with varied motives and functions.