SOME TIME-RELATED RESOURCES
ON THE
WEB
Note: stands for newly added links. Be sure to check them
out!
-What Time is it? Some Answers
The official US time: The site states that: This public service is provided by the Time and Frequency Division of the National Institute of Standards and Technology (NIST).
Some interesting sites: The above site gives a list of links concerning time.
Today's Calendar and Clock Page:
Every answer
you could think of. This page gives you the date and time according to
both
traditional and non-traditional systems, from Gregorian and Chinese to
Mayan and Aztec. Links are provided to calendar pages which use
systems from
around the world, accross cultures, and through time. Very
complete.
The Times of Our
Lives:
This page introduces Socio-chronology, the study of the many
perspectives in which
humans accross cultures experience time.
Times Across the
World:
Current local times accross the world are given.
The Official Source
of Time Used
in the United States: "The Department of the Navy serves as the
country's
official timekeeper, with the Master Clock facility at the Washington
Naval
Observatory." &emdash;National Defense Authorization Act for Fiscal
Years 1992 and
1993. This page is the home page of the Time Service Department.
-Calendars
The Gregorian Calendar, from Wikipedia, the free encyclopedia. At the top of the Gregorian Calendar page, search on "Calendar" to get lots of information about calendars in general.
ISO 8601:
A summary
of the international standard for date and time notation. Helpful in
particular for
transnational, scientific discourse.
The Calendar Zone -- Bringing
Order to
Calendrical Chaos!: "Comprehensive categorized calendar catalog
currently
containing countless correlating connections & calzone
recipes!"
Calendar (Wolfram Research):
A brief history of the calendar with linked references, both internal
for depth and
external for further exploration.
Hermetic
Systems:
Focuses upon the use of calendar systems, with links to conversion
software.
Calendar
Links: A
collection of links for further exploration.
Zapotec
Calendar/Calendario Zapoteco: A bilingual exploration of the
Zapotec
Calendar.
-Horology : Theory & Practice
Horology - The Index (
Clock Watch
and Time Museums) A worldwide list: This site contains internal
links which
give a complete overview of horology, the study of time and
timekeeping.
Heroes of
Horology:
Take a look at what they looked like. No text.
Newsgroup: Via Usenet, alt.horology.
Much of the
discussion focuses on restoration and the general business of clocks.
Still, the
list is interactive, as all lists, providing opportunity to express
opinions and
ask questions.
-History of Clocks
A Walk
Through Time:
A brief stroll through the history of timekeeping. This page was
designed by the
National Institute of Standards and Technology (NIST) to trace the
evolution of
timekeeping from ancient devices to their own, contemporary
calibrations.
Greeks: Thales
to Ptolemy: History of timekeeping and its devices in ancient
Greece.
-Evolution of the Scientific Understanding of Time
Stephen Hawking's Universe: A good site for exploring the physical nature of the universe. Hawking says that he will address questions such as: "Where do we come from? How did the universe begin? Why is the universe the way it is? How will it end?"
Museo
della
Specola: English version of the home page for Museo della Specola.
This page
includes internal links to text on the history of atronomical discover,
with
particular focus on that history in Bologne, Italy. Very useful in
tracing the
intellectual history of scientific discovery relating to time and time
measurement.
Newton: Footprints of the Lion: Cambridge University Library exhibit on Sir Isaac Newton.
Einstein Exhibit:
Maintained
by the American Institute of Physics, this site contains some
interesting material
on Einstein, from original papers to a recording of him explaining his
famous
formula stating the equivalence of mass and energy.
Snapshots of
Einstein
More
Snapshots of Einstein
Time
Distinctions (Wolfram Research): This page gives many definitions related to time and astronomy. Each definition
given links
to a more extended, cross-referenced definition. Good for comparison
and
clarification.
-Biological Timing
The Center for Biological
Timing:
This consortium, based at the University of Virginia, maintains a
website devoted
to circadian clocks, including their history. You can find there a
discussion of
the biomathematics of clocks, as well as a review of the pathbreaking
breakthroughs
that came in 1998.
-The Fourth Dimension
A
Hypercube: In this website we find
a Hypercube cut open and represented in 3-space.
A Collection of
Hyper-Dimensional
Links :
It contains
an extensive list of links and Java Applets.
-Time Travel
A Course in Time
Travel: A
28-lesson course on how to become a time traveler, including meditation
and
progressive techniques.
Hyper Dimensional
Resonator, sold
here: This website offers the Hyper Dimensional Resonator: a device
that will
allow you, or so they claim, to travel into the past or explore the
future.
Time travel in the
Movies:
This website lists movies that explore the possibilities of time
travel.
-Articles of
Interest
Time in Scientific American: The September 2002 issue of the magazine is devoted to a discussion of time, and contains many interesting articles on the subject. Viewing many of them requires payment.
Einstein's Hot Time (Scientific American, September 2002): Reference to an article by Einstein in which he claims that: "When a man sits with a pretty girl for an hour, it seems like a minute. But let him sit on a hot stove for a minute and it's longer than an hour. That's relativity." Physicists do not agree with his conclusion that "That's relativity." But the article provides food for thought.
Scientists Slow Light To a Crawl By TOM KIRCHOFER
Associated
Press Writer, February 19, 1999: This is the article, for which we do not have a link yet,
that speaks of
the experiments with the speed of light conducted at the Rowland
Institute for
Science in Cambridge and Harvard University. In commenting on this article, Professor Mook has said: "As I understand this, it is just a super, super refractive index. Light is being slowed down by passage through a medium--no big deal. What is big news here is that the speed is incredibly slow. But there is nothing to undo Einstein's second postualte or Maxwell's equations. Actually the second postulate is just a special case of the first postulate: the laws of physics are the same in all inertial reference frames. Since Maxwell's equations predict a speed for light that is independent of the motion of the source or reciever of the light, Einstein's second postulate follows immediately. And there has never, ever been any evidence that Maxwell's equations are in error. They are the only part of "classical" physics that has survived relativity theory unscathed."
|