[Phys-L] Re: light bulb transient

[Leigh Palmer <palmer@SFU.CA>]

A uniformly increasing function is linear, while a monotonically
increasing function simply increases without decreasing. A common
example of the former is uniformly accelerated motion in which
velocity increases uniformly in time. The charge on a capacitor
connected to a battery through a resistor is an example of a
monotonically increasing function of time.

I wasn't going to answer this question (I suspect everyone knew
the answer anyway), but something occurred to me. Can the motion
of a particle in a uniform gravitational field, with no other
forces applied, properly be called uniformly accelerated motion?

Leigh

On 15-Nov-05, at 1:00 AM, Automatic digest processor wrote:

> At 01:36 PM 11/14/2005, Leigh, you wrote:
> > Michael hits the nail on its head, as usual. The filament temperature
> > increases monotonically in time, and so too does the brightness of
> > the filament. However, before Michael pointed out what the actual
> > question was I didn't see it. John Denker's question would be a good
> > one to use on students for teaching purposes, but not on examinations
> > to test their knowledge of physics.
> >
> > Leigh
>
>
> Can anybody see the difference between a filament temperature
>  that increases monotonically, and a filament temperature that
>  increases uniformly?
>
> :-)
>
> Brian Whatcott    Altus OK    Eureka!
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