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