The Measurement of Time
In Our Time29 Mar 2012

The Measurement of Time

Melvyn Bragg and his guests discuss the measurement of time. Early civilisations used the movements of heavenly bodies to tell the time, but even in the ancient world more sophisticated timekeeping devices such as waterclocks were known. The development of mechanical clocks in Europe emerged in the medieval period when monks used such devices to sound an alarm to signal it was the hour to pray, although these clocks did not tell them the time. For hundreds of years clocks were inaccurate and it proved hard to remedy the problems, let alone settle on a standard time that the country should follow. It was with the advent of the railways that time finally became standardised in Britain in the mid-19th century and only in 1884 that Greenwich became the prime meridian of the world. Atomic clocks now mark the passing of the days, hours, and minutes and they are capable of keeping time to a second in 15 million years. With:Kristen LippincottFormer Director of the Royal Observatory, GreenwichJim BennettDirector of the Museum of the History of Science at the University of OxfordJonathan BettsSenior Curator of Horology at the Royal Observatory, GreenwichProducer: Natalia Fernandez.

Episoder(1086)

The Evolution of Lungs

The Evolution of Lungs

Melvyn Bragg and guests discuss the evolution of lungs and of the first breaths, which can be traced back 400 million years to when animal life spread from rock pools and swamps onto land, as some fis...

10 Jul 202548min

The Vienna Secession

The Vienna Secession

In 1897, Gustav Klimt led a group of radical artists to break free from the cultural establishment of Vienna and found a movement that became known as the Vienna Secession. In the vibrant atmosphere o...

3 Jul 202554min

Hypnosis

Hypnosis

Ever since Franz Anton Mesmer induced trance-like states in his Parisian subjects in the late eighteenth century, dressed in long purple robes, hypnosis has been associated with performance, power and...

26 Jun 202545min

Paul von Hindenburg

Paul von Hindenburg

Melvyn Bragg and guests discuss the life and role of one of the most significant figures in early 20th Century German history. Paul von Hindenburg (1847-1934) had been famous since 1914 as the victori...

19 Jun 202552min

Copyright

Copyright

In 1710, the British Parliament passed a piece of legislation entitled An Act for the Encouragement of Learning. It became known as the Statute of Anne, and it was the world’s first copyright law. ...

12 Jun 20251h

Lise Meitner

Lise Meitner

Melvyn Bragg and guests discuss the decisive role of one of the great 20th Century physicists in solving the question of nuclear fission. It is said that Meitner (1878-1968) made this breakthrough ov...

5 Jun 202557min

The Korean Empire

The Korean Empire

Melvyn Bragg and guests discuss Korea's brief but significant period as an empire as it moved from the 500-year-old dynastic Joseon monarchy towards modernity. It was in October 1897 that King Gojong ...

29 Mai 202547min

Molière

Molière

Melvyn Bragg and guests discuss one of the great figures in world literature. The French playwright Molière (1622-1673) began as an actor, aiming to be a tragedian, but he was stronger in comedy, tour...

22 Mai 202551min

Populært innen Historie

med-egne-oyne
rss-dette-ma-aldri-skje-igjen
historier-som-endret-norge
henrettelsespodden
rss-benadet
rss-katastrofe
rss-nadelose-nordmenn-gestapo
sektledere
historier-som-endret-verden
rss-strid-de-norske-borgerkrigene
aftenposten-historie
rss-politisk-preik
rss-frontkjemperne
rss-bisarr-historie
historiepodden
rss-historiepodden-ww2
historiepodden-ww2
undersattene
rss-gamle-greier
liberal-halvtime