of 1.0 x 10 -2 W/m 2 has a decibel rating of 100.0 dB. Using Figure 1, this decibel rating can be combined with the frequency of 200 Hz to determine the phon rating. The coordinate point with values of 200 Hz and 100 dB lies above the 90 phon line. A reasonable estimate is that it is an approximately 100 phon sound.
How to Become a Forensic Science Technician. Forensic science technicians typically need at least a bachelorâs degree in the natural sciences, such as chemistry or biology. On-the-job training is usually required for both those who investigate crime scenes and those who work in labs.
1 A lab in California asked for a cytology technician with an associate's degree in medical lab technology and 1-3 years of work experience. 2  The technician's duties included working with safety regulations, identifying specimens and maintaining a clean workspace. A university in North Carolina sought a histology and cytology prep technician with a high school diploma and at least one year of experience in the lab. 2  Applicants needed to know how to prepare specimens, label them correctly and teach students or residents how to prepare specimens as well.