John Harrison

ClockmakerWikipedia

MENTIONS

EPISODES

PODCASTS

Sep 21, 2026

Dinner with Dan

I Have Confidence you will like this movie!

Sep 21 · 1 Mention

Dan GarrisHOST

21:06

Probably eventually sometime.

Dan GarrisHOST

21:08

And finally, my legacy lunch buddy, John Harrison, and his friend Mike from Columbus, who was showing his 1989 Bentley in the show.

Dan GarrisHOST

21:19

Oh,

Nan WhaleyPANELIST

21:19

nice.

SynthAIcast

#025 - Twenty-six percent: the measure and the measurer | SynthAIcast

Sep 20 · 1 Mention

#6 FR Top 30%

ClaudeHOST

7:45

Among them, astronomers.

ClaudeHOST

7:47

A self-taught clockmaker, John Harrison, submits a clock.

ClaudeHOST

7:52

It works.

ClaudeHOST

7:54

The board takes decades to agree.

sarah marie anderson's podcast

General knowledge ( Mark Donovan )

Sep 12 · 1 Mention

Mark DonovanGUEST

4:41

Which city serves as the capital of Slovakia? Bratislava.

Mark DonovanGUEST

4:51

What instrument did John Harrison develop in the 18th century to determine longitude at sea? The marine chronometer, a highly accurate shipboard clock.

Mark DonovanGUEST

5:06

Which explosive device, nicknamed for its resemblance to a tropical fruit, was commonly used by soldiers in World War II? The hand grenade, specifically the pineapple or Mk II grenade.

Mark DonovanGUEST

5:24

Which car manufacturer produced the first automobile part that was entirely designed by a computer? Cadillac.

Unknown podcast

Who Were the Druids? Rethinking Rome’s View of Celtic Priests

Sep 12 · 1 Mention

speaker_1UNKNOWN

9:34

He built an array of brass instruments for precise measurements, which later helped Sir Isaac Newton compute the Earth's rotation and obliquity.

speaker_1UNKNOWN

9:42

The observatory's data fed back to navigators, improving sea charts and the long-sought longitude solution, an endeavor that John Harrison would solve in seventeen sixty-one with his marine chronometer, a device so reliable it finally gave Britain unrivaled maritime supremacy.

speaker_1UNKNOWN

10:00

But let me not forget that this burst of natural philosophy wasn't confined to physics or astronomy alone.

speaker_1UNKNOWN

10:07

Even culinary experiments found a place.

Unknown podcast

Trial by Combat: From Anglo‑Saxon Courts to Norman Reform

Sep 11 · 1 Mention

speaker_1UNKNOWN

3:39

In the years that followed, Parliament passed the Longitude Act of seventeen fourteen, offering a prize for a practical way to compute east-west position.

speaker_1UNKNOWN

3:49

The first serious contender was John Harrison's marine chronometer, but it wasn't until the eighteenth century experiments that a working solution emerged.

speaker_1UNKNOWN

4:00

Shovell himself became a martyr in popular memory.

speaker_1UNKNOWN

4:03

Memorials in Westminster Abbey and plaques across Cornwall remind us how his death spurred scientific progress.

Unknown podcast

Brink’s‑Mat 1983: Gold, Gangs and London’s Underworld

Sep 11 · 1 Mention

speaker_2UNKNOWN

31:28

Speaking of navigation hazards, remember the 1707 disaster off the Isles of Scilly, where four warships went down because captains couldn’t keep accurate longitude.

speaker_2UNKNOWN

31:39

That calamity forced Parliament to reward practical solutions like John Harrison’s marine chronometer.

speaker_2UNKNOWN

31:46

It shows how a single maritime tragedy could drive scientific breakthroughs that would also impact inland waterways and bridge safety.

speaker_2UNKNOWN

31:55

Taken together, these episodes paint a picture of London as a city constantly negotiating with its environment, the river, the weather, the technology of the day, and even the flow of commerce.