Perhaps the only contact many of us have with the sort of valves you get in electronics these days is if we have an ageing cathode-ray tube TV, or if we know a particularly boring audiophile who is prone to drone on at length about how his organically grown amp produces a much richer, more vibrant sound than your puny CDs or that new fangled streaming "music" that all the kids are listening to these days.
But valves (which our Americanly-challenged friends call vacuum tubes) were the backbone of the electronics industry for 50 years or so, until they were superseded by solid-state transistors.
Subscribe to MoneyWeek
Subscribe to MoneyWeek today and get your first six magazine issues absolutely FREE
Sign up to Money Morning
Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter
Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter
-
Reducing cash ISA limit will make lending difficult and expensive, warn providersAn open letter from the Building Societies Association has urged the chancellor to keep the cash ISA limit at £20,000. We look at whether a smaller cash ISA allowance will make it harder to get a mortgage or loan
-
Nvidia becomes world's first $4 trillion companyThe AI boom has catapulted Nvidia’s share price to astronomic heights, becoming the world’s most valuable company and the first to pass the $4 trillion milestone
-
31 August 1957: the Federation of Malaya declares independence from the UKFeatures On this day in 1957, after ten years of preparation, the Federation of Malaya became an independent nation.
-
13 April 1960: the first satellite navigation system is launchedFeatures On this day in 1960, Nasa sent the Transit 1B satellite into orbit to provide positioning for the US Navy’s fleet of Polaris ballistic missile submarines.
-
9 April 1838: National Gallery opens in Trafalgar SquareFeatures On this day in 1838, William Wilkins’ new National Gallery building in Trafalgar Square opened to the public.
-
3 March 1962: British Antarctic Territory is createdFeatures On this day in 1962, Britain formed the British Antarctic Territory administered from the Falkland Islands.
-
10 March 2000: the dotcom bubble peaks
Features Tech mania fanned by the dawning of the internet age inflated the dotcom bubble to maximum extent, on this day in 2000.
-
9 March 1776: Adam Smith publishes 'The Wealth of Nations'
Features On this day in 1776, Adam Smith, the “father of modern economics”, published his hugely influential book The Wealth of Nations.
-
8 March 1817: the New York Stock Exchange is formedFeatures On this day in 1817, a group of brokers moved out of a New York coffee house to form what would become the biggest stock exchange in the world.
-
7 March 1969: Queen Elizabeth II officially opens the Victoria Line
Features On this day in 1969, Queen Elizabeth II took only her second trip on the tube to officially open the underground’s newest line – the Victoria Line.
