[Gasification] OT, now, Boat pulls easier than Cart?

Mark Ludlow mark at ludlow.com
Mon May 30 13:28:48 CDT 2011


Geoff:

 

Flotsam moves with its suspending medium with no cost. Ever rowed upstream?
It's grossly inefficient and makes one wish that they were on a towpath.
Work is defined in foot-pounds of energy spent. Oh! If only every waterway
ran downhill!

 

The resistive forces of going against a current (or merely moving forward in
still water) are well understood.

 

Just to be On Topic I'd like to say: Pyrolysis and Gasification.

 

Best, Mark

 

From: gasification-bounces at lists.bioenergylists.org
[mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of GF
Sent: Sunday, May 29, 2011 22:11
To: gasification at lists.bioenergylists.org
Subject: Re: [Gasification] OT, now, Boat pulls easier than Cart?

 

I will guess humanity made boats before inventing the wheel

canals came before railways 1 hp could move 100 tons mile after mile

I was up on Armory and discovered an ancient dried up canal  associated with
an old copper mine.

It was about 30 inches wide and about the same depth, it meandered around
the side of a hill to the edge of a cliff

and was at least 1/4 mile long and several hundred years old.

An interesting relic showing the importance of material movements using
water as a means of transport due to the lack of friction.

 

GF 

 

 

-----Original Message-----
From: Anand Karve <adkarve at gmail.com>
To: Discussion of biomass pyrolysis and gasification
<gasification at lists.bioenergylists.org>
Sent: Mon, May 30, 2011 12:34 am
Subject: Re: [Gasification] OT, now, Boat pulls easier than Cart?

Dear List,
I am neither an engineer nor a physicist, but a biologist. I made the
observation that nature did not evolve wheeled locomotion because a
smooth road was a prerequisite for wheeled transport.  Even humans,
who developed wheeled transport, use it only on roads or rails and not
elsewhere. .
Yours
A.D.Karve
 
On Mon, May 30, 2011 at 4:33 AM, Arnt Karlsen <arnt at c2i.net> wrote:
> On Sun, 29 May 2011 10:59:55 -0700, Henri wrote in message
> <857E9F7D-AEB5-488F-8D4C-DC0B87A2D3A1 at telusplanet.net>:
> 
> ..well, this list speaks volumes for itself. ;oD
> 
>> Never know a bird brain could evolve to that
>> 
>> Sent from my iPhone
>> 
>> On May 29, 2011, at 7:08 AM, Jeff Davis <jeff0124 at velocity.net> wrote:
>> 
 
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