Day 17:

Day 17:

Oscilloscopes 

We used a function generator together with a speaker, an oscilloscope and a tap key to see how the various knobs and doohickeys affected the waves. We basically played around with it for a while and eventually got a feel for them

Sound From a Function Generator

We found that adjusting frequency altered the pitch of the sound produced by the wave. Amplitude controlled the volume or sound intensity. By selecting a different wave form, such as square wave, we found that the volume and pitch were both affected depending on our choice. The square wave was loudest.

The Vertical Voltage Axis

We turned the volts per division to 0.5 V and pressed the tap key. The line went up 3 divisions. The horizontal x-axis represented time and the y-axis represent voltage, so we multiply 3 x 0.5 (V/div) to get the battery's voltage, 1.5 V. It actually said 1.5 on the battery, too.

Lissajous Figures

Ratio 1:1 creates an ellipse figure

Ratio 2:1 creates an upside-down stretched infinity figure

Ratio 2:3 creates a fish shape

Ratio 2:1 creates an infinity figure

The pictures above are examples of Lissajous Figures. The shape of the figures are determined by the ratio of the two frequency received by the oscilloscope. The infinity symbol was my favorite. I instagrammed it with a caption that said "Physics Forever!" HA. Because infinity, get it?