Before revision: "The Ergonomics of Light" by Bradford J. Powell, Buildings.com, October, 2002, retrieved November 3, 2007 Poor light can be divided into the following: Individual or socio-cultural expectations Insufficient light Poor distribution of light Improper contrast Glare Flicker Thermal heating (over or under) Acoustic noise (especially fluorescents) Color spectrum ( amber street lighting ) Effects of poor light The effects of poor light can include the following: low productivity high human error rates inability to match or select correct colors eyestrain headache a reduction in mental alertness general malaise low employee morale {| class="wikitable"|- style="height:35px"!
After revision: "The Ergonomics of Light" by Bradford J. Powell, Buildings.com, October, 2002, retrieved November 3, 2007 Poor light can be divided into the following: Individual or socio-cultural expectations Insufficient light Poor distribution of light Improper contrast Glare Flicker Thermal heating (over or under) Acoustic noise (especially fluorescents) Color spectrum ( full-spectrum light, color temperature, etc ) Effects of poor light The effects of poor light can include the following: low productivity high human error rates inability to match or select correct colors eyestrain headache a reduction in mental alertness general malaise low employee morale {| class="wikitable"|- style="height:35px"!