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.
Instructions. Determine the type of surface finish used on the hardwood floor. Old hardwood floors usually have a wax finish while more recent hardwood floors have a polyurethane finish. To discover the type of finish on the floor, place a drop of water on the floor and wait for it to dry.If there is a white spot on the floor when the water dries, then the floor has been treated with wax.acuum the floor to remove all dust and debris. Mix a wood-floor cleanser with water, according to the manufacturer's directions. You can use a neutral cleanser or one made for the type of wood finish on your floor. Dip a sponge mop into this mixture then squeeze it until it is slightly damp. Mop the floor.