Final answer:
The proper height for a table or bedside lamp is usually at eye level when sitting, typically between 58 to 64 centimeters. A tape measure, yard stick, or meter stick can be used to measure the height. Recommended illuminance levels should also be considered for comfort and eye health.
Step-by-step explanation:
To determine the proper height for a table or bedside lamp, several factors should be considered, such as the height of the bed or table, the purpose of the lamp, and the comfort level for reading or other activities. Typically, the lampshade should be at eye level when sitting down, ensuring that the light is not shining directly into your eyes. A common measurement tool that can be used to measure the lamp height is a tape measure, yard stick, or meter stick.
If a lamp is being selected for reading, the bottom of the lampshade should be at shoulder height to prevent direct glare. For instance, if you are measuring for a bedside table lamp, the lamp height can be roughly between 58 to 64 centimeters (approximately 23 to 25 inches), which often aligns with the top of the mattress or slightly higher. For an office setting, using recommended illuminance levels such as the 500 1x suggested by OSHA for desktop lighting is a wise choice to reduce eye strain.