solar thermal music

[Akavir13]

Sounds like it should be part of a puzzle in Myst.

[StookieBill]

I was going to try fine guage brass tube, perhaps that's too thermal conducive to give a proper temperature gradient though. I've read pyrex tubes are good. Looking forward to hearing those glissandi...

[StookieBill]

what did did you use for cooling at the back? did you use a capillary bundle, or are they just open?

[sota53]

mostly open, output depends more on stack material and other factors.  various mods in the latest version (in a sort of thermal-organ-meets-pedal-stee­l-guitar....)

[hottermale]

Hi could you mesure howmuch Audio power it can generate? Frequency and amplitude? or dB?

[sota53]

Freq range for this set was about 250 to 880 Hz, more or less an octave and a half above middle C. Range can be extended by changing the size of cells in the thermoacoustic "stack.".

Sound intensity was about 83 dB at 1 meter.

[eebamxela]

THATS AWESOME!!

An explanation of what the hell is going on would be nice though.

[sklarm]

Nicely done. Did you custom make the reflective concentrators or was that a off the shelf thing?

[cowboyswami]

this is beautiful! music from the sun. How did you make the instrument? Can you share; I'd like to have a solar music sculpture in my yard too

[rwsandham]

check out the glass harmonica