[TheForge] boing boing pond.

[jerry Frost]

That might be something to see/hear Pete, there isn't enough cool stuff in a
person's life. There is a gravel pit lake just down the hill from us and I
think Jake wouldn't mind me giving it a try if I invited him to watch. I
have an old graphite crucible or I could talk to a caster friend about one
and getting coal or charcoal to iron melting temp isn't a problem for a boy
with a forge and blower.

How's this sound. One disposable crucible, one flame resistant trebuchet a
hot coal fire and a frozen pond. Lift crucible onto the treb sling, step
back, WAY BACK and pull the release on a dark night of course. Hmmmm? Then
again a ballista would be good to give it a nice linear horizontal
trajectory and be a whole LOT safer. If catapulting molten iron can be
considered "safer" than just about anything of course.

Jer
-----Original Message-----
From: TheForge [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Peter
Fels & Phoebe Palmer
Sent: Tuesday, October 21, 2014 9:53 AM
To: Blacksmithing List Sponsored by ABANA
Subject: Re: [TheForge] boing boing pond.

If someone was still puddling iron on a large scale, it'd be fun to try it
on that pond!

On Oct 21, 2014, at 5:40 AM, Bruce . wrote:

I saw that.  The sound is indeed cool.  To my ear, it sounds like a "chirp",
which is a scientific term, believe it or not, for a waveform that (you
guessed it!) sounds like a chirp!
http://en.wikipedia.org/wiki/Chirp
I learned about this waveform from a discussion (?) of Fourier-transform
NMR, in which the radio signal exciting the nuclei may be delivered as a
chirp in order to scan the wavelength spectrum.
Now, this makes me wonder WHY a chirp is produced by skipping rocks, and
whether anything can be learned from it.  I( get on these rants every now
and then since somebody discovered you could produce X-rays using scotch
tape!  http://en.wikipedia.org/wiki/Scotch_Tape#X-rays)

Bruce
NJ

On Tue, Oct 21, 2014 at 2:15 AM, jerry Frost <akfrosty at mtaonline.net> wrote:

> What to do with your fish pond when it freezes over.
> 
> Jer
> 
> http://www.ktuu.com/news/news/rock-skipper-discovers-unique-noise/2915
> 8406
>