"Cool Met Stuff" : The 40th year of the Caesium beam atomic clock

2 October 2020

The Hong Kong Observatory's time service is based on the Caesium beam atomic clock, keeping an accuracy within 0.01 millionth second a day. These would be introduced in the latest episode of "Cool Met Stuff".

The video is now available on the "MyObservatory" mobile application and the Observatory's website for your viewing (programme is broadcasted in Cantonese).

Welcome to view "Cool Met Stuff" from this link (broadcast in Cantonese).

Broadcast schedule of various TV channels can be found here.