Title: A influência dos espectros da luz em usuários residenciais
Abstract: This study aims to introduce the reader to the influence of light on residential users, showing that the advancement of technologies throughout history and access to electric artificial lighting have provided greater comfort to the activities related to their homes.New technologies, more economically energetic, allowed access to greater amounts of light by users with different white light tones, allowing a wide choice, but may influence the production of the hormone melatonin, which regulates the biological clock, causing many disturbances.Fieldwork was carried out in residences, divided into two lines of reasoning, the first to be read in a sample of random households and the second based on a residence used as a model.However, in the latter case, the technologies employed were altered.In both cases measurements were taken in the living room in front of the television.These studies were based on the Circadian Stimulus method (Rea M.S., 2005, 2011), based on several laboratory studies, which demonstrated the influence of light on the production of melatonin, where it was used in the two adopted procedures.It is concluded that, although estimates of suppression levels found are low, technologies with higher color temperatures, meaning whiter lights, have higher inhibition rates and should be avoided, as well as the amounts of light practiced for residential environments must be carefully dimensioned.This work does not have a conclusive character but rather introduces a methodology that is still in the final phase of studies, but it can contribute to point out guidelines that have not been approached in the professional practice and are intended to guide end users.