Sound to Light Magic Wand - Standing Waves

[630MillionGods]

I think you will need to feed a generated sine wave instead of music to speakers so that wave pattern does not change while scanning.

[jeriellsworth]

@630MillionGods. It was a sine wave.  You would not capture standing waves with music.

[630MillionGods]

@jeriellsworth 

[sk7ca]

thats so cool jeri! :D i wanna try this out! :P

[andyzweb]

more on standing waves please! this was super informative

[kinglonewolf104]

wow, really cool :)

.

&eB

[JohnWasser]

I found a more complete view of that Bell Labs experiment (Thanks, TinEye.com!):

forum.phy.ntnu.edu.tw/demolab/­phpBB/webdata/162_lrg_sound.jp­g

They use a neon bulb and the device takes ten minutes to do a scan.

[avsci]

How are the microphone and light bulb connected? Cool effect :)

[jeriellsworth]

@avsci Sorry I didn't mention that it was a simple audio amplifier LM386 chip.