Sunburn is caused by UV radiation, either from the sun or from artificial sources, such as tanning lamps, welding arcs, or ultraviolet germicidal irradiation. It is a reaction of the body to direct DNA damage from UVB light. This damage is mainly the formation of a thymine dimer.xcessive UV radiation is the leading cause of primarily non-malignant skin tumors. Sunscreen is widely agreed to prevent sunburn and some types of skin cancer. Clothing, including hats, is considered the preferred skin protection method.
A protractor is used to measure angles. When surveying a theodolite is used. There are a number of tools on the market that perform angle measurement. A <b>protractor</b> is used to measure angles.<br />When surveying a <b>theodolite</b> is used.<br />There are a number of tools on the market that perform angle measurement. Minor edit?
Six Sigma Tools. The Six Sigma expert uses qualitative and quantitative techniques to drive process improvement. Although the tools, themselves, are not unique, the way they are applied and integrated as part of a system is. Six Sigma professionals do not always agree as to exactly which tools constitute the set. Some of the statistical and graphical tools commonly used in improvement projects are listed below. Defining a problem, improvement opportunity, or requirements: 1  Project charter to define the focus, scope, direction, and motivation for the improvement team. 2  Voice of the customer to understand feedback from current and future customers indicating offerings that satisfy, delight, and dissatisfy them.