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NYU Physics Department  

Intermediate Experimental Physics I


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Coupled Pendulums   1. Pendulum

To investigate the simple and physical pendulum. In both cases you will determine how the period varies with length, mass, and amplitude. Intital thsi is done with hook masses for the simple pendulum. After, we use a rotary motion sensor to create a physical pendulum setup.





Coupled Pendulums   2. Coupled Pendulums

The motion of two coupled pendulums is studied. While the general motion of this system may seem complicated, any motion of this system can be described by the sum of two normal modes. In a given normal mode all parts of the system oscillate at the same frequency and pass through their equilibrium positions at the same time. The two normal modes of this system will be observed and the frequency of each mode measured.





oscillation   3. Oscillations of a String

In this experiment, free and forced oscillations of a string are studied. The free oscillations of a string fixed at both ends are investigated by driving the string very weakly with a force that varies sinusoidally with time. It will be assumed that the coupling is so weak that the free vibrations are unaffected by the driving force. The forced vibrations of a string fixed at one end and driven at the other end are also studied.




Download: Oscillations of a String.pdf

resonance   4. Resonance Tube

This experiment investigates standing sound waves in a tube subject to different boundary conditions. One end of the tube is closed off with a small speaker. The other end is closed with a movable piston which can be used to change the length of the tube. Sinusoidal sound waves are produced by the speaker and detected by a small microphone in the tube. At resonant frequencies of the tube, the sound waves will be enhanced. In a second experiment, a pulse of sound is sent down the tube and then the reflected pulse is examined.



Download: Resonance.pdf

Spectrum Analysis   5. Spectrum Analysis: The FFT Display

In this lab you will investigate the frequency spectrum of ``white noise'' and of a number of voltages that are periodic in time. Specifically, the voltages are the sine, square, triangle, and ramp (sawtooth) waves. To accomplish this the FFT display will be used. FFT stands for fast fourier transform. Without going into very much detail, the theory section will give you an idea of what the FFT does.




Download: Spectrum Analysis: The FFT Display.pdf

resonance   6. Sonometer


In this experiment you will be observing the oscillations of a string. The arrangement of the equipment is similar to a guitar. You will be plucking the string and observing the frequencies using a FFT.






Download: Sonometer.pdf

diffraction   7. Diffraction and Interference

In this experiment students examine what happens when a plane coherent monochromatic beam of light from a laser is incident on single slits of various widths, and double slits of various widths and separations.





Download: Interference.pdf

Spectrum Analysis   8. Spectroscopy

In this experiment, students use a grating spectrometer to observe and measure the line spectra of various discharge lamps.






Download: Spectroscopy.pdf

Lenses   9. Lenses

In the experiment students will verify the lens equation and investigate several types of lenses.







Lenses   10. Polarization of Light

In this experiment, students will use a laser and multiple polarizers to explore the vector nature of electric fields.






Download:Polarization of Light.pdf