Politics · United States · 13 hrs ago
X Community Notes disputes Trump's claim that his uncle invented radar
US President Donald Trump said his late uncle invented radar while speaking in Florida after voting early in the 2026 midterm elections.
He made the claim as he discussed US military action against Iran and strikes on Iranian radar.
His uncle, John G. Trump, was an electrical engineering professor at MIT who worked on radar during World War II.
X Community Notes challenged the claim, saying his uncle did not invent radar.
The note named Scottish physicist Robert Watson-Watt as the developer of the first practical radar system, building on earlier work by other scientists.
John G. Trump contributed to wartime radar work, but the sources do not credit him with inventing the technology.
The correction appeared beneath videos of Trump's remarks on X; the sources describe no further action.
X’s Community Notes challenged Donald Trump’s claim that his uncle, John G. Trump, invented radar.
Trump made the claim while discussing US military action against Iran after voting early in Florida.
The note said the first practical radar system was developed by Scottish physicist Sir Robert Watson-Watt, building on earlier research.
A second Community Note said John G. Trump contributed to radar development and deployment during World War II but did not invent radar.
John G. Trump was a professor of electrical engineering at MIT and died in 1985.
- Who
- US President Donald Trump and X’s Community Notes.
- What
- Trump said his uncle invented radar. Community Notes disputed the claim, saying he contributed to radar work but did not invent it.
- When
- Saturday, October 24, 2026, according to the articles.
- Where
- Trump spoke in Florida after casting an early ballot; the claim was shared on X.
- Why
- Trump raised his uncle while discussing US military action against Iran and strikes on Iranian radar.
Trump
X Community Notes
Radar invention
Trump
Trump said his uncle, John G. Trump, invented radar.
X Community Notes
Community Notes said John G. Trump did not invent radar; the first practical system was developed by Sir Robert Watson-Watt, building on earlier work.
Uncle’s role
Trump
Trump linked his uncle’s work to the radar systems struck in Iran.
X Community Notes
Community Notes said John G. Trump contributed to World War II radar development and deployment at MIT’s Rad Lab.
John G. Trump researched radar for the Allies and contributed to radar development and deployment at MIT’s Rad Lab.
John G. Trump died.
Trump made the radar claim in Florida after casting an early ballot.
Community Notes challenged Trump’s account and added context about radar’s development.
- Claim
- Trump said his uncle invented radar.
- Uncle
- John G. Trump was an MIT professor of electrical engineering.
- Radar pioneer
- The Community Note credited Sir Robert Watson-Watt with developing the first practical radar system.
- Wartime work
- John G. Trump contributed to World War II radar development and deployment at MIT’s Rad Lab.
- Location
- Trump spoke in Florida after voting early in the 2026 midterm elections.
3 sources
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My uncle invented radar, he might be angry at me over Iran radar strikes: Trump | He was younger brother of Trump's father | Inshorts
What people are saying
My uncle invented radar, can you believe it?
I mean he will probably be angry at me that I knocked out Iran's radar.
Posts on X
TRUMP says HIS UNCLE WOULD BE ANGRY over IRAN RADAR STRIKES ‘Can you BELIEVE IT?’ ‘MY UNCLE INVENTED RADAR… I KNOCKED OUT THEIR RADAR’
Trump: "My uncle invented radar! Can you believe it?"