[TheForge] [The Forge] TheForge Digest, Vol 102, Issue 14

[Andrew Vida]

The volume of a light bulb can be determined to an arbitrary precision 
using Green's Theorem.  Green's specifies double integration, but that 
will only determine the sectional area.  God knows I've forgotten more 
calculus that ever shall I again know or care to know, but IIRC a thord 
integration will sweep the 2-D area into three dimensions about a chosen 
axis.  If I am wrong, sue me.

No, I have no link to any articles.  I'm working from corroded and 
bit-failed memory.

On 8/5/2012 5:42 PM, Daniel T Hayes wrote:
> Sez whom? If I read Ron's original question (muse) the point was that some
> things are simply easier to determine empirically. I believe he chose a
> light bulb as an example of a complex and/or unclearly defined geometry
> (nothing to do with internal volume/capacity versus external
> volume/displacement). In any event my point, trivial as it is, was the
> importance of clearly defining and understanding the question before trying
> to answer it. You say displaced? If the discussion had started with the
> volume of slack tubs, pouring ladles and coal buckets I think most readers
> would follow the discussion and interpret " How would you compute the volume
> of a light bulb?" to mean the internal volume. If the discussion had started
> out discussing the volume of anvils, hammer heads and tongs I think most
> readers would follow the discussion  and interpret " How would you compute
> the volume of a light bulb?" to mean the external volume. In the case of
> Ron's muse I fail to find any indication of which he had in mind.
>
> On the other hand Andy, having read your comments for what must be 20 years
> now I suspect you were just fishing for a reaction. =8^)
>
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Andrew Vida
> Sent: Sunday, August 05, 2012 9:17 AM
> To: Blacksmithing List Sponsored by ABANA
> Subject: Re: [TheForge] [The Forge] TheForge Digest, Vol 102, Issue 14
>
>
>
> On 8/3/2012 7:28 PM, Jerry Frost wrote:
>> Right you are  Daniel. It raises the issue of which holds more, the
>> inside or outside of a container. OR as in the case of a light bulb
>> doesn't contain anything.
>
> Volume in this case refers to volume DISPLACED.
>
> You're welcome.
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