Linked from

The 12 pages that link to Hydrogen maser, each with the reason it gives.

• Atomic clockCompared with: Hydrogen masers offer excellent short-term stability, though they do not define the SI second.

• Very Long Baseline InterferometryRelated: Its stability helps keep station timestamps precise enough for later signal correlation.

• Hydrogen atomRelated: Its atomic transition provides a precise reference for clocks and measurements.

• Hyperfine structureRelated: It uses the hydrogen ground-state hyperfine transition as its resonant frequency.

• Hydrogen spectrumRelated: Its stable microwave transition illustrates how hydrogen spectra support precision timekeeping.

• MaserBroader topic: It applies maser oscillation to precise timekeeping and frequency standards.

• Optical atomic clockCompared with: It offers excellent short-term stability but does not match optical clocks’ long-term accuracy.

• RubidiumCompared with: It is an alternative atomic frequency standard with different stability and operating characteristics.

• Very Long Baseline ArrayRelated: Stable clocks let VLBA stations timestamp signals precisely enough for correlation.

• ProtiumRelated: Its reference transition is measured in ordinary hydrogen, predominantly protium.

• Caesium standardCompared with: It often offers better short-term stability, while caesium standards provide a direct second realization.

• Norman Ramsey Jr.Broader topic: Ramsey’s group developed hydrogen-maser technology for exceptionally stable timekeeping.