• Find out what time it really is.
• Take a Walk Through Time—an illustrated history of timekeeping.
• See historical exhibits relating to time and frequency.
• Get help on metric conversions.
• Learn more about the metric system, also called the International System of Units (SI).
• Interested in physics? Find out about fundamental physical constants.
• Tour our Virtual Museum, which features an exhibit on the history of weights and measures.
• Find out how NIST helps protect America's Charters of Freedom—the Declaration of Independence, the Constitution, and the Bill of Rights.
• Explore a virtual community and see how NIST works to make everyone's life a little better each day.
• Find out where the National Institute of Standards and Technology (NIST) has a connection to items in your home.
• Take a tour of your city and see how the National Institute of Standards and Technology has a vital connection to many components of society.
• Learn about Marie Curie and the NIST (NBS) Radium Standards.
• Check out the guide to NIST educational activities.

Created: May 10, 2001
Last updated: August 15, 2001
Contact: inquiries@nist.gov