The Invention of Radio
In Our Time4 Heinä 2013

The Invention of Radio

Melvyn Bragg and his guests discuss the invention of radio. In the early 1860s the Scottish physicist James Clerk Maxwell derived four equations which together describe the behaviour of electricity and magnetism. They predicted the existence of a previously unknown phenomenon: electromagnetic waves. These waves were first observed in the early 1880s, and over the next two decades a succession of scientists and engineers built increasingly elaborate devices to produce and detect them. Eventually this gave birth to a new technology: radio. The Italian Guglielmo Marconi is commonly described as the father of radio - but many other figures were involved in its development, and it was not him but a Canadian, Reginald Fessenden, who first succeeded in transmitting speech over the airwaves.

With:

Simon Schaffer Professor of the History of Science at the University of Cambridge

Elizabeth Bruton Postdoctoral Researcher at the University of Leeds

John Liffen Curator of Communications at the Science Museum, London

Producer: Thomas Morris.

Jaksot(1080)

Slime Moulds

Slime Moulds

Melvyn Bragg and guests discuss slime mould, a basic organism that grows on logs, cowpats and compost heaps. Scientists have found difficult to categorise slime mould: in 1868, the biologist Thomas Hu...

30 Tammi 202551min

Vase-mania

Vase-mania

Melvyn Bragg and guests discuss eighteenth century 'vase-mania'. In the second half of the century, inspired by archaeological discoveries, the Grand Tour and the founding of the British Museum, parts...

23 Tammi 202556min

Plutarch's Parallel Lives

Plutarch's Parallel Lives

Melvyn Bragg and guests discuss the Greek biographer Plutarch (c46 AD-c120 AD) and especially his work 'Parallel Lives' which has shaped the way successive generations see the Classical world. Plutarc...

16 Tammi 202556min

The Habitability of Planets

The Habitability of Planets

Melvyn Bragg and guests discuss some of the great unanswered questions in science: how and where did life on Earth begin, what did it need to thrive and could it be found elsewhere? Charles Darwin spe...

9 Tammi 202552min

Nizami Ganjavi

Nizami Ganjavi

Melvyn Bragg and guests discuss one of the greatest romantic poets in Persian literature. Nizami Ganjavi (c1141–1209) is was born in the city of Ganja in what is now Azerbaijan and his popularity soo...

2 Tammi 202552min

The Hanoverian Succession

The Hanoverian Succession

Melvyn Bragg and guests discuss the intense political activity at the turn of the 18th Century, when many politicians in London went to great lengths to find a Protestant successor to the throne of Gr...

26 Joulu 202450min

Italo Calvino

Italo Calvino

Melvyn Bragg and guests discuss the Italian author of Invisible Cities, If On A Winter's Night A Traveller, Cosmicomics and other celebrated novels, fables and short stories of the 20th Century. Calvi...

19 Joulu 202448min

The Antikythera Mechanism

The Antikythera Mechanism

Melvyn Bragg and guests discuss the 2000-year-old device which transformed our understanding of astronomy in ancient Greece. In 1900 a group of sponge divers found the wreck of a ship off the coast o...

12 Joulu 202450min

Suosittua kategoriassa Historia

olipa-kerran-otsikko
gogin-ja-janin-maailmanhistoria
mayday-fi
huijarit
rss-ikiuni
mystista
totuus-vai-salaliitto
tsunami
konginkangas
rouva-diktaattori
rss-kalmakabinetti
rss-sattuu-sita-suomessakin
rss-i-dont-like-mondays-2
sotaa-ja-historiaa-podi
rss-kirkon-ihmeellisimmat-tarinat
maailmanpuu
rss-iltanuotiolla
historiaa-suomeksi
historian-nurkkapoyta
tiedetta-ja-sirkushuveja-vanhojen-aikojen-podcast