Communications · Recorded milestone
Radar
Recorded year1935
Robert Watson-Watt demonstrates radio detection of aircraft; the cavity magnetron follows in 1940.
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Led to
- Ground-mapping radarRecorded · 1943enables
- LORAN radio navigationRecorded · 1943enables
- MaserRecorded · 1954enables
- Atomic clockRecorded · 1955enables
- Light penRecorded · 1955enables
- Microwave ovenRecorded · 1955enables
- National weather radar networkRecorded · 1957enables
- Medical ultrasoundRecorded · 1958enables
- SAGE air defenceRecorded · 1958enables
- Communications satelliteRecorded · 1962requires
- Cosmic microwave backgroundRecorded · 1965requires
- Moon landingRecorded · 1969requires
- Solid-state phased-array antennasRecorded · 1980enables
- Stealth aircraftRecorded · 1983requires
- Doppler weather radarRecorded · 1992enables
- Sea height measured from orbitRecorded · 1992enables
- Satellite radar interferometryRecorded · 1993enables
- Mars roversRecorded · 1997requires
- MetamaterialsRecorded · 2000enables
- Water ice found at lunar polesRecorded · 2009enables
Sources & evidence
Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.