Thomas Jay Chester's Website

"When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind" -- Lord Kelvin (see full quote).

This is not true for everything of course:

Not everything that can be counted counts, and not everything that counts can be counted.
(supposedly from a plaque placed on the wall by Albert Einstein)

but it definitely could be more widely applied...

Many of my webpages have moved to a new site. See Table of Contents for all of Tom Chester's webpages. That page tells you which pages are still only active here.

Main Webpages
Financial Advice Hiking Information for San Gabriel Mountains
Interesting Calculations Hiking Information for North San Diego County
Interesting Facts My Grand Canyon hikes
Rate at which various problems and diseases
afflict humans.
Santa Rosa Plateau Information
Average L.A. Freeway Traffic Versus Time
and Day of Week
Fallbrook, CA information.
Personal Information North San Diego County Attractions
Work webpage Science-By-Mail

Each major site has an update log that gives a list of changes versus date. The update log may be found further up the directory structure for sites not in the highest-level directory.


Personal

Personal data identifying which Tom Chester you have reached, since there are several of us with the same name.

I try to answer every personal email sent to me, but there are two reasons why I might have failed to respond to yours:

Hence if you do not get a reply from me, please first check your return address. If I screw up and your email gets lost in my inbox, please email me again.

I receive about 2,000 emails per month, and it long ago became impossible for me to actually deal with every one, despite the intent to do so. A gentle reminder from you will bring your request back to the top of the queue (last in, first out, at least sometimes) for a while, and the overwhelming guilt on my part might stimulate action on your email rather than someone else's...

My bookmark file. Warning: over 150 KB!

My ratings of chocolate bars.

My work webpage.


Hiking Information, with my trip logs




Biking Information




Financial Advice




My Collection of Facts

Over the years, I have collected some interesting facts from my reading material. Here are some examples from the Table of Contents:


Some Calculations That I Have Done and Data That I Have Gathered

Being a scientist, I have naturally attempted to put numbers on various phenomena around me. Here are some examples from the Table of Contents:

Information about Fallbrook, CA

The main page contains links to pages with all the Fallbrook information Scott and I could find on the web, as well as home prices, weather, etc.


Science-By-Mail

Science by Mail is run by the Boston Museum of Science, and stimulates interest in science among 4th through 9th graders by The scientist match-up is the most important part of the program, providing contact with a real live scientist.

In Spring 1997, one of my groups produced a great Indiana Jones Funhouse as the "Big Challenge" for the unit "Simple Machines", which was so well-done that it deserved some webspace.


The Full Quote By Lord Kelvin

This quote is often misquoted on the web. I thank David Willey for pointing this out to me. Here is the full quote:

"When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind: it may be the beginning of knowledge, but you have scarcely, in your thoughts, advanced to the state of science."
William Thompson, Lord Kelvin, Popular Lectures and Addresses [1891-1894], in Bartlett's Familiar Quotations, Fourteenth Edition, 1968, p. 723a.


Copyright © 1996-2004 by Tom Chester.
Permission is freely granted to reproduce any or all of this page as long as credit is given to me at this source:
http://sd.znet.com/~schester/tchester/index.html
Comments and feedback: Tom Chester
Last update: 4 January 2004.