EULUMDAT is a data file format used for specification of photometric data especially intensity distributions from light sources such as lamps and luminaries. The file extension is .ldt. The format was proposed by Axel Stockmar (Light Consult Inc., Berlin) in 1990. The format is the European equivalent to the IES file format specified in IESNA LM-63. The data in an EULUMDAT file is usually measured using a goniophotometer.
Sweep or Vacuum Dirt Daily. Removing the dirt, sand or dust that is tracked in on a daily basis should be done every day. That's right, every single day. The best way to keep your hardwood floors clean and prevent damage is to sweep or vacuum them daily.
A damp mop is a great way to clean a hardwood floor. Robotic floor cleaners can be used on hardwood floors. Hardwood floors can be cleaned of dust and dry objects with a vacuum. A house with hardwood flooring. Hardwood flooring. Most hardwood floors are now finished using a polyurethane coat that looks glossy and shiny.