MODAL ANALYSIS, EXPERIMENTAL | Measurement Techniques

Inexpensive microscopy for introductory laboratory courses

“…7 A preferable method would be to purchase bare CCD cameras directly. Appendix A contains a list of inexpensive cameras suitable for our application.…”

“…͑See Table III 7 For instructions on how to remove the lens from an iSight camera, see Ͻhttp://www.fas.harvard.edu/~scphys/isight/camera_mod.htmϾ. 8 There are many inexpensive consumer-grade LED light sources such as the Sylvania "Dot-it Swivel" that can be used in place of a custom device with or without the microscope mirror.…”

“…They are available from many suppliers. 7,8 The ultrasonic transducers are installed in the configuration shown in Fig. 2 As the transmitting array turns, one oscilloscope displays the unprocessed waveform from the receiving transducer.…”

“…The planar geometry of the apparatus allows us to simplify the structure by using long rods rather than spheres. 6,7 The rods are sandwiched between two 6.4 mm polystyrene plates that are drilled to accept the rods, as shown in Fig. 2.…”

“…7 The ratio of the force and the acceleration is called the inertance. The inertance is real, independent of frequency, and equal to the mass of the object.…”