Should Baird's 1926 mechanical demonstration or Farnsworth's 1927 all-electronic demonstration be credited as the true invention of television?

Facts

Why It Is Open

Baird's January 1926 demonstration showed the first live moving television images before witnesses, but used a mechanical scanning system; Philo Farnsworth demonstrated the first all-electronic television the following year, and some historians credit Farnsworth's electronic approach, which underlies all later television technology, as the more consequential achievement despite Baird's earlier priority. 1

What Would Resolve This

Not resolvable by new evidence alone: it turns on whether priority in time or eventual technological lineage is the criterion for "true" invention, a definitional question historians continue to answer differently. 1

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Yes 1

Open Question

Baird's January 1926 demonstration showed the first live moving television images before witnesses, but used a mechanical scanning system; Philo Farnsworth demonstrated the first all-electronic television the following year, and some historians credit Farnsworth's electronic approach, which underlies all later television technology, as the more consequential achievement despite Baird's earlier priority.

What would resolve this Not resolvable by new evidence alone: it turns on whether priority in time or eventual technological lineage is the criterion for "true" invention, a definitional question historians continue to answer differently.

OpenWho Really Invented the Mechanical Television? (BBC Science Focus)

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First Public Television Demonstration

Source Who Really Invented the Mechanical Television? (BBC Science Focus)

Sources

1. Who Really Invented the Mechanical Television? (BBC Science Focus)

BBC Science Focus Magazinesciencefocus.com, Who Really Invented the Mechanical Television?

Quote, sciencefocus.com, Who Really Invented the Mechanical Television?

While still a teenager, he realised that emerging electronic technology could scan images far faster and more finely than any mechanical device, and in 1927 demonstrated the first electronic television. A bitter patent dispute with the US electronics company RCA then broke out. Despite ultimately winning and being awarded a settlement plus royalties, Farnsworth and his key role in the invention of television are now largely forgotten.

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