The Portuguese alphabet contains twenty-four letters, and itâs a basic lesson of Portuguese vocabulary. Portuguese students begin learning Portuguese language with the alphabet, this is a essential step to learn how to write each letter an how to pronounce each one. If one learns this vocabulary topic very well, one will not have problems to write all Portuguese words.
Laser Entfernungsmesser image by Otmar Smit from Fotolia.com. A laser distance meter works by use measuring the time it takes a pulse of laser light to be reflected off a target and returned to the sender.perating Principle. A laser distance meter emits a pulse of laser at a target. The pulse then reflects off the target and back to the sending device (in this case, a laser distance meter).
Laser Radar. A laser radar is a device which uses one of the distance measurement techniques as described above, and scans the direction of the distance measurement in two dimensions. This allows the acquisition of an image, or more precisely a depth profile of some object, as required e.g. in robotics.ome of the most important techniques used for laser distance meters are as follows: 1  Triangulation is a geometric method, useful for distances in the range of ââ1 mm to many kilometers.