LIVE! PSW 2505 The Nuclear Clock: Scaling Quantum Systems for Precision Metrology

The meeting will be held in the John Wesley Powell Auditorium, adjacent to the Cosmos Club. The Powell Auditorium is located at 2170 Florida Avenue, NW Washington, DC 20008. Use of the Cosmos Club is restricted to the Powell Auditorium, the entryway to the auditorium, and the restrooms immediately outside the auditorium. Please note there is no onsite parking available.

[OpenWorldRichard]

Thank you for the excellent presentation. There will be some very interesting applications for such accurate clocks.

The multi messenger results including LIGO show that light must be a wave in the medium of space. This medium must have a rest frame and the effects of time dilation will depend on the velocity relative to this space rest frame.

So it should be possible to detect a different rate of passage of time at different seasons of the year due to the change in the direction of the velocity of the Earth.

The best estimate for the velocity of the Milky Way galaxy relative to the space rest frame is 55 km/s in the direction of the galaxy of Andromeda. We know the orbital velocity of the solar system around the centre of the Milky Way. These are fairly constant. It is the orbital velocity direction of the Earth which varies.

The difficulty lies in detecting the change in the rate of passage of time because all clocks will vary in the same way.