cover of episode A wire around the world

A wire around the world

2024/12/21
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People
A
Alan Renton
A
Alice Thompson
B
Betty Pearce
B
Bruce McRae
J
John Nash
J
Julian Todd
L
Laurie Wallace
M
Mary Godwin
P
Paul Davies
T
Tom Standage
Topics
@Julian Todd : 我是查尔斯·托德的曾曾孙,他被誉为"世界电报之父"。为了纪念电报线路建成150周年,我将重走他当年骑马走过的路线,这段旅程将穿越当时欧洲人完全未探索的地区,面临着未知的地形、水源和潜在的危险。这项工程是19世纪最大、最困难的基础设施项目之一,面临着巨大的时间压力和经济风险,以及来自其他州的竞争。线路的终点是现在的艾丽斯泉,我的曾曾祖母艾丽斯也追随她的丈夫来到了澳大利亚。如果没有她的追随,我今天就不会存在。 @Paul Davies : 150多年前,电报的出现彻底改变了澳大利亚的社会、商业和政治。艾丽斯泉的建立起源于1872年建成的原始电报站,它标志着澳大利亚与世界其他地区通过电报连接起来。横贯澳大利亚的电报线路对澳大利亚社会、商业和政治产生了深远的影响,如同今天的互联网革命一样。我将讲述横贯澳大利亚电报线路建设背后的故事,包括其中的艰辛、冒险和创新。 @Mary Godwin : 康沃尔郡的波斯库诺村庄之所以成为全球电信枢纽,是因为约翰·彭德尔决定将大英帝国连接起来。波斯库诺村庄优越的地理位置使其成为电缆登陆的理想场所。到1900年左右,波斯库诺村庄拥有14条电缆,使其成为世界上最大的电报站。波斯库诺与澳大利亚之间通过海底电缆连接的事实令许多人感到震惊。 @Tom Standage : 电报的起源可以追溯到1746年一群修道士进行的一项实验,该实验证明了通过导线传递信号的可能性。修道士的实验证明了信号可以快速地长距离传输。如果能够改进修道士实验中的方法,就能创造出一种能够快速传输长距离信息的通讯设备。克劳德·夏普发明了机械式电报,这与我们今天所熟知的电报有所不同。克劳德·夏普的机械式电报利用塔和可移动的臂来传递信息,这在当时是一种非常快速的通讯方式。拿破仑军队需要一种更隐蔽、覆盖范围更广的通讯系统,这推动了有线电报的发展。摩尔斯电码因其简单有效而成为最成功的编码方式。摩尔斯电码只需要一根电线,这比其他系统更经济实惠。摩尔斯电码的复杂性在于操作员需要学习和掌握摩尔斯电码。海底电缆的成功建设依赖于对海洋底部的了解以及合适的绝缘材料——古塔胶。铺设海底电缆面临着诸多挑战,例如海底火山、海洋生物以及海洋蠕虫的破坏。铺设海底电缆如同100多年后的登月计划一样,需要大量的资金、人才和技术。早期的海底电缆铺设尝试存在诸多失败,例如电缆漂浮、被渔民割断等。早期的跨大西洋电缆铺设也面临着诸多挑战,例如船只大小不足、海上天气恶劣等。早期的跨大西洋电缆铺设尝试采用分段铺设的方式,但由于海上天气等因素,这种方式存在很大的难度。赛勒斯·菲尔德成功铺设了第一条跨大西洋电缆,因为他对电报技术知之甚少,反而能够大胆尝试。第一条跨大西洋电缆的成功铺设受到了广泛的庆祝,维多利亚女王还向美国总统发去了贺电。早期的跨大西洋电报传输速度并不快。提高电压来加快数据传输速度的做法破坏了第一条跨大西洋电缆。第二条和第三条跨大西洋电缆的铺设成功得益于“大东方号”巨轮的出现。尽管第一条跨大西洋电缆曾断裂,但最终还是成功修复并投入使用。 @John Nash : 海底电缆使用的电缆电码与普通的摩尔斯电码有所不同,它使用相同长度但极性相反的点和划来传递信息。 @Alan Renton : 波斯库诺电报博物馆展示了从世界各地连接到波斯库诺的海底电缆。这些电缆的直径约为1.5英寸,由钢缆编织而成,其铜芯用于连接到终端盒。波斯库诺电报站曾连接着世界各地的多个地点,包括维戈、毕尔巴鄂、里斯本、法国、直布罗陀等。 @Alice Thompson : 我的曾曾祖父查尔斯·托德在澳大利亚建立了电报线路,这使得澳大利亚与世界其他地区实现了快速通讯。我的曾曾祖父查尔斯·托德和曾曾祖母艾丽斯在很年轻的时候就相识并结婚了,艾丽斯当时只有12岁。查尔斯·托德希望通过建设电报线路来改善澳大利亚与世界其他地区的通讯状况,因为当时的通讯速度非常慢。140年后,我重走曾曾祖父母当年修建电报线路的路线,发现即使现在,这段旅程仍然非常困难。建设电报线路的工人使用的设备简陋,而且对路线也不熟悉。在沙漠中发现保存下来的电报线杆和绝缘子让我感到兴奋。电报线路沿线的一些小镇和村庄仍然保留着与电报相关的活动和庆祝活动。 @Laurie Wallace : 查尔斯·托德希望将亚洲的电缆连接到澳大利亚的达尔文港,然后通过电报线路连接到阿德莱德,再辐射到悉尼、墨尔本和布里斯班。查尔斯·托德承诺在两年内完成从阿德莱德到达尔文的电报线路建设,并承担全部费用。建设横贯澳大利亚的电报线路是一项极其大胆的设想,因为当时人们对澳大利亚内陆地区知之甚少。建设电报线路面临着巨大的时间压力和经济风险,如果未能按时完成,将面临巨额罚款。 @Bruce McRae : 澳大利亚原住民会破坏电报线路,因为他们需要电线和绝缘子作为工具。电报公司通过提供废弃的电线和绝缘子来减少澳大利亚原住民对电报线路的破坏。 @Betty Pearce : 我的父亲曾参与建设电报线路的工作,他从小就参与了这项工作。建设电报线路的工作条件艰苦,但人们当时并没有觉得很艰苦。艾丽斯泉的建立改变了当地原住民的生活方式,他们的土地被用来发展畜牧业。艾丽斯泉这个名字是一个误称,因为这里并没有泉水。艾丽斯泉的地理位置很重要,因为它拥有水源。原住民被驱逐出艾丽斯泉这个重要的地点,这给他们带来了巨大的损失。如果原住民没有被驱逐出艾丽斯泉,那么这个地区的发展可能会完全不同。

Deep Dive

Key Insights

Why was the construction of the telegraph line from the UK to Australia considered a monumental engineering achievement?

It was the largest and most difficult infrastructure project of the 1800s, involving the first international telecommunication system. It spanned uncharted territories, including deserts and jungles, and connected continents via submarine cables.

What challenges did the builders of the telegraph line face in Australia?

They had to navigate unexplored territories, uncertain weather conditions, and harsh environments. They faced potential penalties for delays and had to compete with other states like Queensland and New South Wales for the project.

How did the telegraph line impact Australian society and business?

It revolutionized communication, allowing farmers and mining companies to access real-time market prices. It transformed politics and business by connecting Australia to the global economy, much like the internet does today.

What role did Alice Springs play in the telegraph line project?

Alice Springs was a crucial outpost on the telegraph line, serving as a relay station. Its existence was directly tied to the telegraph, and it became a key settlement in the outback.

How did the telegraph line affect Aboriginal Australians?

The line disrupted traditional lands and ways of life. Aboriginal people sometimes sabotaged the line for materials, but the telegraph companies later adopted strategies to reduce conflicts by leaving spare materials for them.

What was the significance of the Porthcurno Telegraph Museum in Cornwall?

Porthcurno was a global telecommunications hub in the 19th century, with 14 cables connecting the British Empire. It was the landing point for submarine cables linking the UK to its colonies, including Australia.

What was the origin of the word 'telegraph'?

The term was coined by Claude Chappe, who invented a mechanical telegraph system using towers and movable arms. It originally referred to a system of visual signaling over long distances.

Why was Samuel Morse's telegraph system more successful than others?

Morse's system used a single wire and required operators to learn Morse code, making it cheaper and simpler to implement compared to systems with multiple wires like the British Cooke and Wheatstone telegraph.

What was the role of gutta-percha in the telegraph cable project?

Gutta-percha, a latex-like substance from Malaya, provided the necessary insulation for the copper core of the submarine cables, protecting it from the ocean environment and marine life.

What were some of the early challenges faced in laying submarine cables?

Early cables often failed due to insufficient insulation, floating on the ocean surface, or being damaged by marine life like sharks and worms. Laying the cables was also technically challenging, requiring precise navigation and coordination between ships.

Chapters
This episode explores the history of the Overland Telegraph Line, a 19th-century engineering marvel that connected Australia to the rest of the world. It discusses the impact of this technology on Australian society, business, and politics, drawing parallels to the internet revolution of today. The episode features interviews with descendants of the key figures involved in the project's construction.
  • The construction of the Overland Telegraph Line, connecting Australia to the rest of the world via a wire, was a significant 19th-century engineering achievement.
  • The project faced numerous challenges including unexplored territory, harsh conditions, and competition from other colonies.
  • The completion of the line had a profound impact on Australian society, business, and politics, enabling near-instantaneous communication with the rest of the world.

Shownotes Transcript

Paul Davies retraces one of the great engineering achievements of the 19th century – the construction of a telegraph wire from the UK to Australia.