As part of their unit on waves and sound, students in Rosalee Lamm's AP Physics classes at PHS visited the workshop of classical guitar maker Toby Rzepka. Toby talked about the physics he uses when choosing his materials, including stiffness measurements of soundboards, and demonstrated the Chladni patterns made by a vibrating soundboard, which showed the dominant frequencies that the guitar produced. "I like for my students to see that science is useful in many different fields, and that there are so many more career options available to them than what they may be familiar with right now." said Ms. Lamm. "As Toby said, he came to guitar making through his love for music and projects, but his ability to make high-end classical guitars really depends on his understanding of the physics involved."