In article , Oddjob
wrote:
"Don Pearce" wrote in message
...
On Tue, 30 Nov 2004 20:01:56 -0000, "Oddjob"
wrote:

Nice graph Jim :-)

The labelling of your x y axis would be better (mathematically
correct) by using / instead of ( )

Current / mA instead of Current (mA)

Oddjob ;-)


I've never bought this theory - that the axis of a graph is the other
side of an equation. As far as I am concerned the graph axis is the
current in milliamps - not one-over-milliamps (or current per milliamp
as you have it, which is dimensionless).

So it is Current (mA) - a good label Not Current / mA - an incorrect
representation of what is on the graph.

But the axis is the description of the quantity on the graph, so that:

Current / mA = 300 therefore

Current = 300 mA this is correct :-)

"Correct" or not as an equation, like Don, it is not a usage I tend to
employ. It can confuse some students in my experience who are puzzled by
thinking they somehow have to divide the values by 'mA' or think of it as
being a 'current per mA'. I think the meaning of Current (mA) is fairly
clear, but of course, anything may be misunderstood. :-)

TBH I'm more concerned that I only obtained some fairly rough data over a
small range, etc.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html