Re: AC electricity

[Bob Sciamanda <trebor@VELOCITY.NET>]

> How do they explain the fact that
> it comes up to speed slowly?

Because the filament takes time to warm up; as it warms the number of
emitted electrons increases.

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
www.velocity.net/~trebor

----- Original Message -----
From: "Bernard G. Cleyet & Nancy Ann Seese" <georgeann@REDSHIFT.COM>
To: <PHYS-L@lists.nau.edu>
Sent: Saturday, January 20, 2001 3:11 AM
Subject: Re: AC electricity


> That's because it's not a transistor!  Electrons move faster in
transistors.
> bc
>
> P.s  It's more like a few inches a second and the same for any size
kinescope
> (One or two seconds is a bit optimistic).  How do they explain the fact
that
> it comes up to speed slowly?
>
> Tim O'Donnell wrote:
>
> > That is the way my students would see it!
> > Tim
> > > As one of my more observant students pointed out this  cannot be true.
It
> > takes as
> > > long as one or two seconds for the TV to make a picture when it is
turned
> > on.
> > > Clearly the speed of electrons must be only  1 or 2 feet per second.
:-)
> > > --
> > >
> > > *****************************
> > > S.Goelzer
> > > Physics Teacher
> > > Coe - Brown Northwood Academy
> > > Northwood NH 03261
> > > 603-942-5531 ext43
> > > sgoelzer@coebrownacademy.com
> > > *****************************