Light is a prerequisite in
Answers
Answer:
Light is an essential subject to see, read and understand everything. Requirement of good lighting is possible by arranging some factors that helps effectively to reading process. If lighting is not in a good pattern its lead to headache, stress and other fatigue etc; requirement of good lighting is surely needed to run our daily workout without losing efficiency. Some requirements of good lighting are:
Sufficiency.
Distribution.
Absence of glare.
Absence of sharp shadows.
Steadiness.
Color of light.
Surroundings.
Angle of light.
Why these requirements for good lighting?
The first point is sufficiency of lighting. Light need to be sufficient to see objects properly. Insufficient lighting cause to eye strain. How much lighting is considered as sufficient? About an illumination that comes out from a 15-20 candles are enough as sufficient light.
The second point is distribution of light. The efficient vision without any eye stress is occurs by uniformity in light distribution. Light distribution should be proper by establishing the source of light from the left side. IS there any need the light should from left side? No. but, you can use 2 or 3 sources of light from any side with one condition. It should be same light with same intensity of light. I.e. the source of light is needed to be with same voltage.
The third point is Absence of glare. What you mean by glare? Glare is high contrast of light. There should be excessive light and high intensity of light cause to glare. For example; Torch lights. These lights are pointed and cause to glare. It is not possible to our eye for effective reading in glared light.
The fourth point is about shadows. Shadows occur when any object takes place between the light source and field of vision. Shadows create stress and need to be clear for proper reading process. For example: Incandescent bulbs, it always causes to create shadiness but, florescent bulbs are proper to avoid shadows and effective reading.
The fifth point is steadiness. The term refers to stable condition of light. Light must be constant with constant contrast and constant intensity. Flickering lights are creating eyestrain and headache.
The sixth point is color of light. Is there any problem by using colored light? Yes, if you use red or violet lights the effective reading will not take place. Because of the intensity of these lights are high than normal light. Day light is the sufficient illumination needed by eye to fulfill reading process. Artificial lights need to be like daylight contrast.
The seventh point is surrounding. The term refers to background field of vision. As a requirement to good lighting background has a major role. The walls in your rooms and ceilings are creates reflection and its essential to accumulation of light. If you use glass walls or black backgrounds the efficiency of light should lost. Because glass walls emit the light outside and black background absorbs the light and don’t possi
ble reflection. So, surrounding should be in a normal condition by using proper materials cause to reflection.
The eighth point is angle of lighting. Light source should be established in a proper way that lead to effective lighting by reflection. If the light is established in an improper condition there should not reflection and the efficiency will lost. For effective reading light source is better to establish in left side wall than ceiling and other sides.