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).
This type of light is useful for lots of technologies and instrumentsâeven some that you might use at home! How does a laser work? Light travels in waves, and the distance between the peaks of a wave is called the wavelength. Each color of light has a different wavelength. For example, blue light has a shorter wavelength than red light. Sunlightâand the typical light from a lightbulbâis made up of light with many different wavelengths.