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Rick and others,
You may need to change that "pot" in the analog computer to two buttons,
one with a "+" and one with a "-" on it. :-)
Here's one that surprised me in lab today, the lab manual refers to
hooking up a "flashlight cell" into the circuit. The students have a
wooden base device with two banana plug jacks with wires running to the
two sides of a plainly visible battery. A D-size battery. Which looks
like, well a "flashlight cell".
Perhaps, I shouldn't be surprised, but apparently not that many devices
use D-size cells anymore and the word "cell" is dropping from the
vernacular. And as I think about, more and more, flashlights are using
AA and AAA size batteries. Getting old has its problems wrt the
teaching profession.
Joel
| >
| > IMHO, the battery-bulb thing is just a symptom of the
| bigger issue, w=
| > hich is that most people have no concept of the existence
| of interna=
| > l mechanisms, much less the need to understand internal
| mechanisms. I=
| > f you ask someone to explain "how it works," they'll
| probably say "pu=
| > sh this button and turn that knob." >
| > VIckie Frohne
| >
| We've even run into the problem with our old Analog
| Computer--Energy & Environment Simulator that when we say
| turn up the Coal knob, they don't know which way to rotate
| the knob. Nobody adjusts the volume with turnable
| knobs--they just press the up or down button on the remote. ;-(
|
| Rick