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Time


Directory > Kids_and_Teens > School_Time > Science > Astronomy_and_Space > Time



239 Listings - DR (10/10)239 Listings - DR (10/10) The Hourglass - http://www.uh.edu/engines/epi1469.htm
The University of Houston College of engineering, describes how an hourglass works and also provides interesting facts about this timekeeper.
485 Listings - DR (10/10)485 Listings - DR (10/10) On Time - http://americanhistory.si.edu/ontime/
Learn about the history of time measuring devices in this online Smithsonian Institute exhibit. Page discusses how the accuracy of watches and clocks affected people's perception and usage of time.
On Target - DR (10/10)On Target - DR (10/10) Countdown - http://www.spiders.com/portfolio/demos/countdown/
Calculate the exact time in days, hours, minutes and seconds from now until your birthday or any other event.
1,132 Listings - DR (10/10)1,132 Listings - DR (10/10) International Standard Date and Time Notation - http://www.cl.cam.ac.uk/~mgk25/iso-time.html
International Standard ISO 8601 specifies numeric representations of date and time. It helps to avoid confusion caused by the many different national notations.
422 Listings - DR (7/10)422 Listings - DR (7/10) The Galileo Project - Pendulum Clock - http://galileo.rice.edu/sci/instruments/pendulum.html
Describes Galileo's work on pendulums and the pendulum clock.
1,256 Listings - DR (7/10)1,256 Listings - DR (7/10) Time Travel - http://www.pbs.org/wgbh/nova/time/
Is time travel possible? See what Carl Sagan and Einstein had to say about time travel in this NOVA special.
On Target - DR (7/10)On Target - DR (7/10) Industrious Clock - http://yugop.com/ver3/stuff/03/fla.html
Clock using video of a hand drawing to display the time.
430 Listings - DR (7/10)430 Listings - DR (7/10) How Stuff Works: Time - http://www.howstuffworks.com/time.htm
Complete five-part explanation of time and how it is measured, including information about clocks, time zones, and calendars.
401 Listings - DR (6/10)401 Listings - DR (6/10) NPR : 'Seize the Daylight' - http://www.npr.org/templates/story/story.php?storyId=4572036
Talks about the complicated politics and curious history of daylight standard time.
5 Listings - DR (6/10)5 Listings - DR (6/10) Making a Horizontal Sundial - http://www.lmsal.com/YPOP/Classroom/Lessons/Sundials/sundials.html
Learn how to make a sundial. Instructions are for beginners, intermediate, or advanced, and work for either the northern or southern hemispheres.
14 Listings - DR (6/10)14 Listings - DR (6/10) Local Times Around the World - http://www.timeanddate.com/worldclock/
Find out what time it is anywhere in the world.
42 Listings - DR (5/10)42 Listings - DR (5/10) Daylight Saving Time - http://www.mrdowling.com/601-daylight.html
Why do we use daylight savings time and who invented it?
42 Listings - DR (5/10)42 Listings - DR (5/10) Time - http://www.mrdowling.com/601-time.html
Just how do we measure time and what has Greenwich England got to do with it?
On Target - DR (5/10)On Target - DR (5/10) What Time Is It! - http://www.whattimeisit.com/
Gives the current time, synchronized by NIST. Close to 100 different time zones supported, as well as the ability to select the default time zone.
16 Listings - DR (5/10)16 Listings - DR (5/10) Science Museum - Atomic Clocks - http://www.sciencemuseum.org.uk/onlinestuff/stories/atomic_clocks.aspx
Talks about how different types of atomic clocks work, and the history of their invention.
101 Listings - DR (3/10)101 Listings - DR (3/10) A History of Time - http://www-history.mcs.st-andrews.ac.uk/HistTopics/Time_1.html
A two-part article that discusses physicist's evolving view of time.
1,283 Listings - DR (3/10)1,283 Listings - DR (3/10) US Library of Congress - How does an hourglass measure time? - http://www.loc.gov/rr/scitech/mysteries/hourglass.html
Answers questions about how an hourglass keeps time and what are the contributing factors determining how long an hourglass lasts.
5 Listings - DR (3/10)5 Listings - DR (3/10) World Time Converter - http://www.gkindia.com/bitsol_time/
Provides online times converter and brief information about GMT/UTC.
87 Listings - DR (2/10)87 Listings - DR (2/10) Making a Sun Clock - http://www.exploratorium.edu/science_explorer/sunclock.html
Before there were clocks, people used shadows to tell time. Learn how to make your own sun clock!
On Target - DR (1/10)On Target - DR (1/10) When Does Daylight Savings Time Occur - http://www.logan.ws/articles/when_does_daylight_savings_time_occur.asp
Explanation of when and why we have daylight savings time.
On Target - DR (0/10)On Target - DR (0/10) Discover Magazine: Time Machine - http://discovermagazine.com/2005/nov/cover
Article explores a clock designed to keep accurate time for 10,000 years.
On Target - DR (0/10)On Target - DR (0/10) A Walk Through Time - http://physics.nist.gov/GenInt/Time/time.html
An illustrated history of timekeeping from ancient times to the present.
On Target - DR (0/10)On Target - DR (0/10) Latitude and Longitude - http://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htm
Introduction to latitude and longitude, a way of calculating exactly where you are anyplace on earth and a way to tell time.

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