Mr. Haselden’s physics students, Dani Weeks and Elias Kief, are busy converting periods to frequencies using wavelengths and time. In their lab, Qualitative Vibrations and Waves, they set up different pendulum lengths. After their calculations, they moved on to measuring and observing longitudinal and transverse waves using a modified slinky. They witnessed constructive and destructive interference firsthand. Out of the book and into the lab!