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You searched for "atomic clocks"
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How does GPS work?
Could we ever go back in time?
All about... Quantum Computing
Diamond Light Source - A researcher's best friend
How does technology know where in the world we are?
Why is there more matter than antimatter?
What is radioactivity?
Light pollution - does anyone care?
The physics of Santa
What is antimatter?

What are sub-atomic particles?
short video explaining subatomic particles, elements and compounds. It shows how the atom is composed of sub-atomic particles such as electrons, protons and neutrons and how protons and neutrons are ...

Robert Hofstadter
Robert Hofstadter (1915 - 1990) developed a new experimental method for the investigation of the inner structure of atomic nuclei. His method was to bombard the atomic nuclei with electrons of very ...

Laboratory of Atomic and Solid State Physics
A collection of pages from Cornell University concerning atomic and solid state physics.

Atomic Spectra Databases
The database contains data for transitions and energy levels in atoms and atomic ions, including transitions of 99 elements and energy levels of 51 elements.

Time Dilation
Explanation of time dilation with example of two identical clocks moving relative to each other.

Atoms, Nuclei, Particles, & Other Small Things
This site gives an overview of atomic and subatomic physics.

NPL Beginners' Guide - Atomic Timekeeping
An introduction to time keeping and how time is agreed around the world.

Atomic Physics
This site gives an overview of the physics of the atom through a series of links to relevant articles.