CO2 lasers is conducted to cutting die - board with the aim of discussing the relationship between cutting depth and parameters such as laser power, cutting speed and focal position.

The refractive index was obtained through measuring the focal position of a capillary filled with the liquid by a reading microscope, and doing a calculation with an analytic formula.

Bright colors can add vibrancy, energy and interest - however in the wrong position they can also distract viewers of an image away from focal points.