Laser Markers Basics Q1–Q12

This document provides foundational knowledge about laser markers, covering 12 basic questions (Q1–Q12) such as what a laser is, types of lasers, safety hazards, marking principles, color contrast, and running costs. It includes detailed explanations of laser properties (monochromaticity, directivity, coherence) and a chart categorizing laser types by medium (gas, solid, liquid) and typical applications.