Waves


Waves began with an unannounced cold open on the sidewalk, the lack of an announcement an unintended consequence of the after effects of the kamadipw en kousapw Kepin Awak and a first birthday celebration for a grandson. 

 

Multiple practice passes were done to work on a low speed, linear centerline. At 2.48 seconds to cross three poster pad sheets the velocity came out at 106 cm/second, a very low velocity. 

On Wednesday the chain was used to reinforce the relationships between wavelength, frequency, wave velocity, and period. 

The chain is now in the box of springs. 

Amplitude on the chain was also demonstrated. Then two web sites were used to demonstrate sound as a wave in air.

Water preload on Wednesday afternoon. 

Including the resonant Erlenmeyer flask to demonstrate the theory.

The number of mallets constrains the the number of groups to seven.

The graduated cylinders are filled to the 600 ml line. The lowest frequency is 288 Hertz, with a quarter-wavelength at around 34 cm given local air temperature. That is up around the 800 ml mark. Hence 600 ml in each cylinder plus 1000 ml to play with in the beakers. 

The indoor variant is preferred on account of the system bringing another family of equations with the system.



Board 

Grace Marie records data while Bracey works with the tuning fork to find resonance points

Roselihn checks for resonance, Ford handles pouring the water from a beaker


Maicalany with a tuning fork, Veronica adding water

Kayla handles the beaker while Moki checks for resonance

Marikai measures the resonance length

Travis adds water, Trevor holds the tuning fork

Marikai adds water

Travis checks for resonance as Trishelle looks on

Jaymar works with the tuning fork while Franchesca records data 

Board with laboratory notes

Follow on lecture on function families which also included a look at functions of conic sections in Desmos.  11:00 data in Desmos. 


Separate from class a Desmos notebook was put together to mimic a laboratory report in Desmos. 


Clicking on Open in Editor and then clicking on the graph reveals the underlying data and regression function. 

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