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Re: [Phys-L] Countdown Timer / Alarm / Stopwatch / Split Timer



Works great on my Windows 7, Internet Explorer 11 desktop. Really like that
gong!

Don
Dr. Donald Polvani
Adjunct Faculty, Physics (Retired)
Anne Arundel Community College
Arnold, MD 21012

-----Original Message-----
From: Phys-l [mailto:phys-l-bounces@www.phys-l.org] On Behalf Of John Denker
Sent: Sunday, August 31, 2014 5:40 PM
To: Phys-L@Phys-L.org
Subject: [Phys-L] Countdown Timer / Alarm / Stopwatch / Split Timer

Hi Folks --

There is virtually no physics in it, but here's something you might find of
some small value: It's a software timer.
-- It will count down and alarm when it reaches zero.
-- It will count up.
-- It displays HUGE easy-to-read digits on the screen.
-- You can use it as a stop watch, with arbitrarily many split times.
-- The splits have millisecond resolution, and probably ~20ms accuracy.

https://www.av8n.com/computer/countdown.html

Free, libre, open-source, public domain, cross-platform javascript.
Obviously no warranty. Tested on Firefox (Linux) and Chrome (Android).
Probably works on other platforms. Try it online, then download it for
offline use.

Uses include:
*) Timing random events around the lab. The easy-to-use
split-timer function comes in handy.

*) Timing students' practice talks.

*) Timing talks at actual scientific meetings. There are
always a few guys who think the rules don't apply to them.
Having an actual audible alarm go off encourages them
to finish on time. Easy-to-read digits makes it easy
for them to know the score.

*) Ditto for political candidate forums. A /lot/ of these
guys think the rules don't apply to them. If they ignore
the nice bell sound, you can escalate to the "gong" sound
and/or the "cuckoo clock" sound.

===========

BTW I still do not encourage introductory-level students to write in
javascript. It's too low-level. Learn to program in a modern high-level
language first.
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