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).
Report Abuse. The unit of measurement of distance in space is the distance that light could travel over a period of one year at the rate of 186000 mile per second. because distances of such immense magnitutude are very long and difficult to write and pronounce in terms of figures ,as tromers have adopted such a scale.ow if your question is how to measure a distance between object just by looking at a light coming from it, it may done by looking at half-life time of photons. Somebody technical at particle physics may give a detail answer on this.