**NOTE** This virtual lab ONLY works in newer version FireFox, Chrome, or Safari web browsers!!
Some mobile devices with small screens may require you to rotate your device sideways for the visuals to work properly
A speaker covers up the left side opening of the tube making it "closed" (a speaker is a pressure source, so it acts as a pressure node for standing wave modes - i.e. a "closed" end). The microphone listens to sound coming out of right side. Start the sound and use the slider to choose the frequency of sound you are feeding into the tube. The sound you hear is what the micrphone is picking up. Listen for the frequencies that produce the loudest sounds indicating standing wave resonance modes.
