The solar-powered plane that recently concluded its much delayed and long overdue round-the-world flight was predictably touted as further ‘proof’ that green energy has come of age. The real-world appraisal is dour: a PR stunt to obscure the fact that ‘alternative technologies’ are going nowhere.
Just the other day, we were told history was made when the aircraft Solar Impulse 2 landed in Abu Dhabi after what was described as the first round-the-world flight by a solar powered plane. The epic journey commenced in March, 2015, and since that time the plane had spent a total of 23 days in the air. This was an achievement for which the aviation world waited a long time, quite literally, to applaud — both in the short and much longer-term.
On December 17, 1903, Orville and Wilbur Wright conducted what is generally credited as the first sustained powered flight of a heavier-than-air aircraft, covering 39 metres. By 1905, the Wrights were able to cover 24 miles in 39 minutes 23 seconds. By 1916 the aeroplane had been matched the synchronised machine gun and become a potent instrument of war. A bare 65 years after the short hop at kitty Hawk, NASA put a man on the moon. The rapid progress was fuelled primarily by human imagination, wonderful new commercial opportunities and, of course, by two world wars. It was an extraordinarily rapid pace of development.
In 1925, John Logie Baird demonstrated his first prototype of a modern television set. His breakthrough, of course, relied on earlier technologies, the most important of which was the cathode ray tube first demonstrated in 1907. In 1928, the world’s first television station WGY commenced operation in Schenectady in upstate New York.
In 1932 the BBC commenced regular programming. TV broadcasts in London were on the air an average of four hours daily from 1936 to 1939. There were 12,000 to 15,000 receivers. Some sets in restaurants or bars might have 100 viewers for sport events. Broadcasts were suspended during the war and resumed in 1946. By the 1960s TV had become a ubiquitous part of modern life and by now its quality has improved exponentially.
A third example of technological advancement and commerce began in 1946, when ENIAC, the world’s first electronic general purpose computer was unveiled. It weighed 27 tons, occupied 167 square metres of space, used 150kw of electricity. Its construction cost almost US$7 million in today’s money, not least for its five million hand-soldered joints! It could multiply two 10 digit numbers in .0028 seconds. ENIAC was, of course, based on vacuum tubes and crystal diodes, which imposed a serious physical limitation on future progress. This impediment was overcome in 1955 with the development of the first fully transistorized computer, the Harwell Cadet, at the UK Atomic Energy Research Establishment. The development if the integrated circuit in 1958 then opened the way to the rapid development of the microcomputer. The world went from ENIAC to Apple Mac in just 38 years! And the pace of technological advance in computing since then has been astronomical.
See where I’m going with this? Now consider other technologies, ones we are constantly told are on the very edge of becoming commercially viable.