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.
Wood cleaner â When cleaning wood furniture, opt for a polish made for the type of finish on your wood. Floors with a polyurethane seal need only a solution of warm water and a mild dishwashing soap to come clean after sweeping or dry mopping. In general, though, you will want to use as little water as possible when cleaning wood. If you prefer to use eco-friendly products, all of the above are available as such.