Lighting has changed over time with the development of technological advances. It once was lighting based on fire, candles, and lamps, but now the majority of people rely on electricity. Electric lighting affects us on a physical, psychological, and emotional level. Physically, electric lighting gives us the ability to see at night and in places of darkness. We are able to work, use transportation, and move about without obstruction or harm. Without electric lighting, we would be plunged into darkness and be unable to function as we do today. Psychologically, electric lighting affects us in subtle yet powerful ways. Electric light provides a feeling of safety and security, as it provides illumination and allows us to perceive our environment in an illuminated state. Darkness on the other hand, often elicits feelings of fear and uncertainty. Emotionally, electric lighting has the ability to alter our moods and change the atmosphere of a room or environment. For instance, bright lights can be energizing and uplifting while dim lights can be calming and soothing. This is why restaurants and cafes frequently adjust their lighting to suit the atmosphere they wish to create. In conclusion, electric lighting is an invaluable asset for our modern world. It is a necessary component of our lives that provides safety and security, but it also has the ability to alter our emotions and our environment.