Things You'll Need
Instructions
Determine the chemical reaction that you seek to disrupt. In sunburns, the proteins prostaglandins and cytokines are damaged and lead to the changes in skin complexion. These proteins could be a good chemical compound to test by specifically extracting skin cell samples from a human or other animal. As the prostaglandin and cytokine formations are disrupted due to light, their regents will also change colors.
Place the compounds in a petri dish in a sealed, translucent container to reduce the effects of extraneous air particles. Position the laser to aim directly at the chemical compounds.
Carefully calibrate the laser to the wave spectrum of ultraviolet light. This spectrum wavelength runs from 7.5 * 10^-7 to 10 * 10^-8 meters. The frequency is between 10 * 10^15 and 10 * 10^18 hertz. As the wavelength of light becomes shorter the frequency becomes more powerful.
Calibrate the ultraviolet light and repeatedly test using the appropriate regent for your compound. Keep calibrating the light until you notice significant chemical changes signified by changing regent colors.