3 ms·

What do the clocks use for a frequency standard? I think the caesium standards are not radioactive but the rubidium standards are slightly radioactive.

• sounds 13y ago
  And additionally, RTGs are commonly used as power sources, though the GLONASS design does use solar panels.
• atdepth 13y ago
  Rubidium or cesium possibly? I'm wondering if the U.S. had any hand in sabotaging this launch.