Victory for Abenomics as Japan's maverick PM gets his pick of governor

Haruhiko Kuroda is expected to be the new governor of the Bank of Japan.

The financial press is reporting that Japan's prime minister Shinzo Abe is expected to nominate former finance-ministry official Haruhiko Kuroda as governor of the Bank of Japan. If Kuroda's nomination goes ahead, it will be a victory for Abe's desire to pursue aggressive unconventional monetary policy in order to boost Japan's economic fortunes.

Abe has been engaged in a low-level squabble with his finance minster, former Prime Minister Taro Aso, over the extent of Japan's efforts to boost growth and weaken the yen. Aso, who favours more conventional economic policy, most recently squashed the prime minister's suggestion that Japan might buy foreign bonds as a general policy.

That rift is arguably one of the most important in economic policy today. Just as Britain has been the site of the most rigorous experiment on the effects of voluntary austerity on growth (spoiler: results were negative), Japan is pushing some of the most aggressively expansionary monetary policy ever — and has ideas to go even further. Abe's government has already eroded central bank independence, forcing the Bank of Japan to actively push for growth and inflation; it has "nationalised" capital stock, allowing the state to pay for nominally private sector investment; and it has set explicit targets for the Nikkei, the country's premier stock index, of over 17 per cent growth in one month.

The tussle between Aso and Abe over the foreign bonds purchase was widely seen as a proxy fight for the right to award the governorship, and with the apparent selection of Kuroda, Abe has taken the lead. The governor-to-be has long been a critic of the BoJ's lack of stimulus and will likely encourage it to follow the government's suit in further aggressive, unorthodox measures to hit the new 2 per cent inflation target.

But Reuters' Leika Kihara and Yuko Yoshikawa inject a note of caution to their reporting:

Abe must go through political maneuvering to close the deal, as the nomination must be approved by both houses of parliament including the upper house, where his ruling coalition lacks a majority.

The government hopes to garner support from either the main opposition Democratic Party of Japan (DPJ) or a group of smaller parties to pass the nomination.

There's likely to be an even bigger fight on Abe's hands with one of his two desired deputy governors, Kazumasa Iwata. Iwata is an academic who has called for Japan to print money to fight deflation; his appointment would suggest large scale monetary expansion is on the cards. He was widely reported to be Abe's first choice as governor, before Kuroda was picked as the compromise candidate.

With an ageing population, and flunked recovery from a financial crisis, Britain's experience over the next decade may be scarily similar to Japan's over the last. If Abenomics lifts the country out of its hole, we should all be hoping Mark Carney and the rest of the Bank of England are paying close attention, and preparing to follow suit in case the worst happens.

Haruhiko Kuroda. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Inside Big Ben: why the world’s most famous clock will soon lose its bong

Every now and then, even the most famous of clocks need a bit of care.

London is soon going to lose one of its most familiar sounds when the world-famous Big Ben falls silent for repairs. The “bonging” chimes that have marked the passing of time for Londoners since 1859 will fall silent for months beginning in 2017 as part of a three-year £29m conservation project.

Of course, “Big Ben” is the nickname of the Great Bell and the bell itself is not in bad shape – even though it does have a huge crack in it.

The bell weighs nearly 14 tonnes and it cracked in 1859 when it was first bonged with a hammer that was way too heavy.

The crack was never repaired. Instead the bell was rotated one eighth of a turn and a lighter (200kg) hammer was installed. The cracked bell has a characteristic sound which we have all grown to love.

Big Ben strikes. UK Parliament.

Instead, it is the Elizabeth Tower (1859) and the clock mechanism (1854), designed by Denison and Airy, that need attention.

Any building or machine needs regular maintenance – we paint our doors and windows when they need it and we repair or replace our cars quite routinely. It is convenient to choose a day when we’re out of the house to paint the doors, or when we don’t need the car to repair the brakes. But a clock just doesn’t stop – especially not a clock as iconic as the Great Clock at the Palace of Westminster.

Repairs to the tower are long overdue. There is corrosion damage to the cast iron roof and to the belfry structure which keeps the bells in place. There is water damage to the masonry and condensation problems will be addressed, too. There are plumbing and electrical works to be done for a lift to be installed in one of the ventilation shafts, toilet facilities and the fitting of low-energy lighting.

Marvel of engineering

The clock mechanism itself is remarkable. In its 162-year history it has only had one major breakdown. In 1976 the speed regulator for the chimes broke and the mechanism sped up to destruction. The resulting damage took months to repair.

The weights that drive the clock are, like the bells and hammers, unimaginably huge. The “drive train” that keeps the pendulum swinging and that turns the hands is driven by a weight of about 100kg. Two other weights that ring the bells are each over a tonne. If any of these weights falls out of control (as in the 1976 incident), they could do a lot of damage.

The pendulum suspension spring is especially critical because it holds up the huge pendulum bob which weighs 321kg. The swinging pendulum releases the “escapement” every two seconds which then turns the hands on the clock’s four faces. If you look very closely, you will see that the minute hand doesn’t move smoothly but it sits still most of the time, only moving on each tick by 1.5cm.

The pendulum swings back and forth 21,600 times a day. That’s nearly 8m times a year, bending the pendulum spring. Like any metal, it has the potential to suffer from fatigue. The pendulum needs to be lifted out of the clock so that the spring can be closely inspected.

The clock derives its remarkable accuracy in part from the temperature compensation which is built into the construction of the pendulum. This was yet another of John Harrison’s genius ideas (you probably know him from longitude fame). He came up with the solution of using metals of differing temperature expansion coefficient so that the pendulum doesn’t change in length as the temperature changes with the seasons.

In the Westminster clock, the pendulum shaft is made of concentric tubes of steel and zinc. A similar construction is described for the clock in Trinity College Cambridge and near perfect temperature compensation can be achieved. But zinc is a ductile metal and the tube deforms with time under the heavy load of the 321kg pendulum bob. This “creeping” will cause the temperature compensation to jam up and become less effective.

So stopping the clock will also be a good opportunity to dismantle the pendulum completely and to check that the zinc tube is sliding freely. This in itself is a few days' work.

What makes it tick

But the truly clever bit of this clock is the escapement. All clocks have one - it’s what makes the clock tick, quite literally. Denison developed his new gravity escapement especially for the Westminster clock. It decouples the driving force of the falling weight from the periodic force that maintains the motion of the pendulum. To this day, the best tower clocks in England use the gravity escapement leading to remarkable accuracy – better even than that of your quartz crystal wrist watch.

In Denison’s gravity escapement, the “tick” is the impact of the “legs” of the escapement colliding with hardened steel seats. Each collision causes microscopic damage which, accumulated over millions of collisions per year, causes wear and tear affecting the accuracy of the clock. It is impossible to inspect the escapement without stopping the clock. Part of the maintenance proposed during this stoppage is a thorough overhaul of the escapement and the other workings of the clock.

The Westminster clock is a remarkable icon for London and for England. For more than 150 years it has reminded us of each hour, tirelessly. That’s what I love about clocks – they seem to carry on without a fuss. But every now and then even the most famous of clocks need a bit of care. After this period of pampering, “Big Ben” ought to be set for another 100 or so years of trouble-free running.

The Conversation

Hugh Hunt is a Reader in Engineering Dynamics and Vibration at the University of Cambridge.

This article was originally published on The Conversation. Read the original article.