The noise didn't wake me up: I just woke up, at about 3 a.m., and heard it. It was one of those noises that are felt as well as just heard: a very low-pitched hum. I couldn't make out where it was coming from so, researcher by nature, I got up to investigate.
After walking all round the house I drew a complete blank: there was no obvious direction, and no obvious source. Just the same level of hum no matter where I stood, except it was slightly louder near the windows.
But when I stepped outside, it was gone.
Thinking it might be something electrical but invisible (there's quite a lot of that in our house, all installed by the previous owners and roundly cursed by me), I hit the mains. Still there. And next door was uninhabited at the time, so it couldn't have been anything there either.
I had to admit defeat.
Until I saw an article about a car in the USA which used noise cancellation technology to make the low frequency of its idling engine bearable for the driver. It turns out that this frequency (a few hundred rpm) is not too far away from the resonant frequency of crucial parts of the human body. Like the main artery, or even our brainwaves. Which probably explains why the sound of idling cars is so irritating.
But cars are not usually idling in traffic-jams at three in the morning: they are far more likely to be on some or other mission of mercy on our city's ring road, their engines turning over at some 2000 rpm: just at the point where "vibrations" become "sound".
Those of us who can remember offhand the speed of sound in air can work out the size of a "lump" of air that will resonate with these car engines. Resonance is a strange thing: it takes very little wave power to get something resonating, if it happens to be the right size and shape, and the results can be dramatic. Outdoor air will not resonate, but will quietly carry the energy to the air inside something of the right size, that will oblige.
Something, it turns out in this case, of four and a half metres across. About the size of a typical living-room.
As if that's not enough, windows will also resonate at similar frequencies.
Wednesday, 29 September 2010
Friday, 17 September 2010
Space-age roof
Sometimes, when I'm walking along streets blessed with an absence of traffic, I look up at the roofs. Sometimes these are pretty and atmospheric, with gothic turrets, or art deco friezes, or perhaps they are thatched or gently undulating along the ridge where weight has been borne for hundreds of years. And sometimes, they are just ordinary. Our roof is, or at least was, definitely the latter.
And that is why we had no difficulty deciding to put its large, and previously idle, area to some use: making electricity. We invested in a project to install nine of these futuristic works of art:

On the big day, the British weather obliged with its finest, wettest, rain!

But the gentlemen who came to do the work were no sissies, and carried on regardless
In just one day, everything on the roof was finished!
Arty close-up:

Another atmospheric shot, with reflections of clouds (for people who like that sort of thing):
There's something pleasingly geometrical about that pattern (getting a bit carried away now):

It also co-ordinates perfectly with the décor in the room inside the roof:

It's an interesting coincidence that a set-up like this provides roughly the same amount of energy that a person would spend on physical work (for the curious, the daily average of 4 kWh is the same amount of energy as 3,440 food calories).
And that is why we had no difficulty deciding to put its large, and previously idle, area to some use: making electricity. We invested in a project to install nine of these futuristic works of art:

On the big day, the British weather obliged with its finest, wettest, rain!

But the gentlemen who came to do the work were no sissies, and carried on regardless
In just one day, everything on the roof was finished!
Arty close-up:
Another atmospheric shot, with reflections of clouds (for people who like that sort of thing):
There's something pleasingly geometrical about that pattern (getting a bit carried away now):
It also co-ordinates perfectly with the décor in the room inside the roof:
It's an interesting coincidence that a set-up like this provides roughly the same amount of energy that a person would spend on physical work (for the curious, the daily average of 4 kWh is the same amount of energy as 3,440 food calories).
Sunday, 15 August 2010
Someone Else's Backyard
You can't deny that it's beautiful countryside. Nearly all countryside is beautiful, if that's where you happen to live. And you can't deny that it's unique. The UK includes four climate zones, and any number of geological zones, making for a huge number of possible combinations of the two, each resulting in a different landscape. All of which, in their own way, are unique.
So what of it? Well, a large overseas conglomerate wants to build wind turbines on it. And of course the locals are up in arms. Which, from where I look at the problem, is a terrible shame.
I look at the problem from the point of view of a physicist: we all use electricity, we're no longer "an island of coal...", our gas supplies are fading fast and we don't have any Uranium to call our own. But given that we have plenty of wind, and that we don't have to pay for it, worry about it getting used up, or risk it falling into the hands of terrorists, it seems only logical that we should use it. And if this means adding odd-looking new bits of infrastructure to a landscape already alive with ingenuity from times past (everything from an iron-age settlement, through a motorway, to a nuclear power station and a generous sprinkling of communications masts) then so be it.
This means that when I happen to see wind turbines, in whatever kind of setting, my first thoughts are...Good, someone's addressing our energy problem. Note the use of "our". If they're on wild hills, the wild space is still there, only with the addition of "our" now-visible wild wind blowing over it. The view beyond is still ours to see.
What's missing from my point of view is of course the question of whose wind turbines they are.
It's a sad fact of life that the usual way of doing things involves the large conglomerate paying large sums of money to the people who own the particular field on which they want to build, and nothing to anybody else. Which is immediately divisive. If the field's owners live miles away, and the nearest house happens to be lived in by someone unconnected with the deal, things start to get unfair. As far as I know, the bog-standard wind energy contract doesn't allow for near-neighbours to get a share of the loot. There isn't even a mechanism for the deal to endow the little town with cheap electricity, lower business rates or some kind of part-ownership of the new features in their landscape. However there is a mechanism for the government to pay the large conglomerate, to encourage it to do the right thing.
It gets worse.
Before applying for planning permission, the company had to show off its proposals in the town hall. They conveniently "forgot" to put up most of the photomontages they had prepared, and which now appear on the website of the obligatory protest group (which of course has some friendly-sounding accronym like "Save Our Fells Today"). The website is slick and professional-looking, and so it should be considering the help that Country Guardian can offer in these matters. Like every other piece of anti-wind-farm literature I've ever seen, it portrays the proposal as an "invasion", and the efforts to thwart it as a "battle".
The town council (until recently the parish council), like parish councils all over the country, are all, shall we say, of a certain age, and the conglomerate has the misfortune to be based in Germany. To top it all, while I was staying there a neighbour dropped by to ask, on behalf of his friend in the town council, if we'd like to fly a flag (many of the houses have poles for christmas trees) to commemorate the 70th anniversary of the Battle of Britain. The town council have to consider the wind farm plans and make a recommendation to the nearest city council. The latter happens to be in a different county...it goes on. There was, in short, a general feeling of being "got-at" which was bringing out the worst in people.
In a completely separate incident, there was a water shortage in 1976 following a particularly dry summer. The water board put out publicity asking people to use water sparingly, and people obliged. In 1995 England (but not Scotland) was again short of water. The newly-privatised water companies, whose newly-very-rich bosses had been front page news, put out similar publicity, and people just ignored it and thought, what a cheek. The sensation of being ripped off by large conglomerates overpowered the natural drive to "do our bit".
And so I wonder, would all this have turned out differently if the electricity grid were still a public service, making the new arrivals, in some way, "ours"?
So what of it? Well, a large overseas conglomerate wants to build wind turbines on it. And of course the locals are up in arms. Which, from where I look at the problem, is a terrible shame.
I look at the problem from the point of view of a physicist: we all use electricity, we're no longer "an island of coal...", our gas supplies are fading fast and we don't have any Uranium to call our own. But given that we have plenty of wind, and that we don't have to pay for it, worry about it getting used up, or risk it falling into the hands of terrorists, it seems only logical that we should use it. And if this means adding odd-looking new bits of infrastructure to a landscape already alive with ingenuity from times past (everything from an iron-age settlement, through a motorway, to a nuclear power station and a generous sprinkling of communications masts) then so be it.
This means that when I happen to see wind turbines, in whatever kind of setting, my first thoughts are...Good, someone's addressing our energy problem. Note the use of "our". If they're on wild hills, the wild space is still there, only with the addition of "our" now-visible wild wind blowing over it. The view beyond is still ours to see.
What's missing from my point of view is of course the question of whose wind turbines they are.
It's a sad fact of life that the usual way of doing things involves the large conglomerate paying large sums of money to the people who own the particular field on which they want to build, and nothing to anybody else. Which is immediately divisive. If the field's owners live miles away, and the nearest house happens to be lived in by someone unconnected with the deal, things start to get unfair. As far as I know, the bog-standard wind energy contract doesn't allow for near-neighbours to get a share of the loot. There isn't even a mechanism for the deal to endow the little town with cheap electricity, lower business rates or some kind of part-ownership of the new features in their landscape. However there is a mechanism for the government to pay the large conglomerate, to encourage it to do the right thing.
It gets worse.
Before applying for planning permission, the company had to show off its proposals in the town hall. They conveniently "forgot" to put up most of the photomontages they had prepared, and which now appear on the website of the obligatory protest group (which of course has some friendly-sounding accronym like "Save Our Fells Today"). The website is slick and professional-looking, and so it should be considering the help that Country Guardian can offer in these matters. Like every other piece of anti-wind-farm literature I've ever seen, it portrays the proposal as an "invasion", and the efforts to thwart it as a "battle".
The town council (until recently the parish council), like parish councils all over the country, are all, shall we say, of a certain age, and the conglomerate has the misfortune to be based in Germany. To top it all, while I was staying there a neighbour dropped by to ask, on behalf of his friend in the town council, if we'd like to fly a flag (many of the houses have poles for christmas trees) to commemorate the 70th anniversary of the Battle of Britain. The town council have to consider the wind farm plans and make a recommendation to the nearest city council. The latter happens to be in a different county...it goes on. There was, in short, a general feeling of being "got-at" which was bringing out the worst in people.
In a completely separate incident, there was a water shortage in 1976 following a particularly dry summer. The water board put out publicity asking people to use water sparingly, and people obliged. In 1995 England (but not Scotland) was again short of water. The newly-privatised water companies, whose newly-very-rich bosses had been front page news, put out similar publicity, and people just ignored it and thought, what a cheek. The sensation of being ripped off by large conglomerates overpowered the natural drive to "do our bit".
And so I wonder, would all this have turned out differently if the electricity grid were still a public service, making the new arrivals, in some way, "ours"?
Thursday, 5 August 2010
Seeing further
Even as I write, our local paper says, streams of energetic particles are hurtling towards the Earth, where they will get caught up in our not-quite-as-energetic magnetic field lines and redirected to the poles. I've always wanted to see the Aurora. It's one of those things, like a total eclipse or the great wall of China, that you feel you should see even just once in a lifetime. The local paper goes on to say that this time I won't have to travel far: this Aurora will be so energetic that those of us as far south as 54 degrees will get a good view, as long as the sky is clear.
It forgets to say exactly what the sky needs to be clear of.
Step out into the street and try to catch the aurora. Or indeed anything else in the night sky. Chances are that, unless you live in the middle of a field, all you will get to see is street lighting. It is so intense near our house that we could turn off all our own lights and still walk around and carry on most of our everyday business using just the spare light that spills in from the street. So, of course, could our friendly neighbourhood burglar. But I digress.
It's a tough call to ask for more darkness. Darkness sounds so, uncivilised. It gets used as a metaphor for ignorance, malice, or exile.
But now that there's so little of it left, people are beginning to notice that we're missing out on something. With darkness, our sleep is deeper. Wildlife can go about its business undisturbed.
And, ironically, in the end it allows us to see a lot further.
It forgets to say exactly what the sky needs to be clear of.
Step out into the street and try to catch the aurora. Or indeed anything else in the night sky. Chances are that, unless you live in the middle of a field, all you will get to see is street lighting. It is so intense near our house that we could turn off all our own lights and still walk around and carry on most of our everyday business using just the spare light that spills in from the street. So, of course, could our friendly neighbourhood burglar. But I digress.
It's a tough call to ask for more darkness. Darkness sounds so, uncivilised. It gets used as a metaphor for ignorance, malice, or exile.
But now that there's so little of it left, people are beginning to notice that we're missing out on something. With darkness, our sleep is deeper. Wildlife can go about its business undisturbed.
And, ironically, in the end it allows us to see a lot further.
Monday, 26 July 2010
And a box of Space, please
When we first moved in to the new Chateau Lunchista, it came complete with a small cuboid of green space, which we clutter up and the city council replenish every fortnight. Here it is:
It carried out its humble task to the best of its abilities, never letting us down. It didn't fall to bits, throw tantrums or grind to a halt announcing that it wouldn't carry on without "upgrades". It didn't even fiddle its expenses. All the fortnight's recyclable junk from Chateau Lunchista fitted within its confines (as long as we worked on it a bit). The city council delightedly announced at the end of last year that 43% of all our waste had managed to avoid ending up in a hole int he ground.
Then one hot summer afternoon last week, it became evident that someone at the city council had decided that their good citizens were in need of new space, and lots of it. The space, together with instructions on how to use it, was being delivered from the back of a van, all down our street. Here's our share:
Notice the sleek, black, shiny finish: light just falls into them. Press the black circle on the black flaps at the sides and the lid opens in a self-satisfied manner, revealing the even blacker space within. It is in fact so immaculately black that one feels slightly guilty for soiling it with such mundane detritus as squashed tuna tins, plastic bottles and dog-eared newspapers.
We suspect that Mr Straight, the colourful character whose firm provides most of the UK with its recycling boxes, has somehow developed an upgrade which, like the Tardis, encloses a space capable of extending into the fourth dimension, so that it can accommodate an infinite amount of rubbish. However, given that our new boxes are beginning to fill up in the usual way, we are guessing that the 4th dimension option has been disabled for now, perhaps pending some kind of licence application, or tests verifying that people will still be able to lift them. In the meantime a sort of rubbish version of Parkinson's Law will ensure that, with three boxes instead of just the one (yes the green box, complete with a new sort of fishnet covering to stop things blowing away, will still be out there strutting its stuff), people will put more rubbish out for recycling than the present 43%.
But that's nothing. Lunchista has heard industry rumours that Mr Straight has a team of cosmologists working on the ultimate piece of recycling infrastructure: a box containing its own mini-Black Hole, which will instantly compress any rubbish to a single point of infinite density.
It might be a tad difficult to pick up, mind you.
It carried out its humble task to the best of its abilities, never letting us down. It didn't fall to bits, throw tantrums or grind to a halt announcing that it wouldn't carry on without "upgrades". It didn't even fiddle its expenses. All the fortnight's recyclable junk from Chateau Lunchista fitted within its confines (as long as we worked on it a bit). The city council delightedly announced at the end of last year that 43% of all our waste had managed to avoid ending up in a hole int he ground.Then one hot summer afternoon last week, it became evident that someone at the city council had decided that their good citizens were in need of new space, and lots of it. The space, together with instructions on how to use it, was being delivered from the back of a van, all down our street. Here's our share:
Notice the sleek, black, shiny finish: light just falls into them. Press the black circle on the black flaps at the sides and the lid opens in a self-satisfied manner, revealing the even blacker space within. It is in fact so immaculately black that one feels slightly guilty for soiling it with such mundane detritus as squashed tuna tins, plastic bottles and dog-eared newspapers.We suspect that Mr Straight, the colourful character whose firm provides most of the UK with its recycling boxes, has somehow developed an upgrade which, like the Tardis, encloses a space capable of extending into the fourth dimension, so that it can accommodate an infinite amount of rubbish. However, given that our new boxes are beginning to fill up in the usual way, we are guessing that the 4th dimension option has been disabled for now, perhaps pending some kind of licence application, or tests verifying that people will still be able to lift them. In the meantime a sort of rubbish version of Parkinson's Law will ensure that, with three boxes instead of just the one (yes the green box, complete with a new sort of fishnet covering to stop things blowing away, will still be out there strutting its stuff), people will put more rubbish out for recycling than the present 43%.
But that's nothing. Lunchista has heard industry rumours that Mr Straight has a team of cosmologists working on the ultimate piece of recycling infrastructure: a box containing its own mini-Black Hole, which will instantly compress any rubbish to a single point of infinite density.
It might be a tad difficult to pick up, mind you.
Friday, 23 July 2010
Brand Name Crisis Looms
Insiders in the advertising industry are becoming concerned over what they claim is the very real possibility that, due to the increasing popularity of re-branding, mergers, splits and the shortening lifetime of companies, together with the sheer number of new products launched every year, the industry faces the bleak prospect of running out of new brand names.
An advertising executive, who didn't want to be named, said:
'It's our industry’s dirty secret, the Wolf At The Door, the Mad Woman In The Attic. Nobody wants to talk about it because its effects on civilisation as we know it will be catastrophic.
'If you think about it, the English language only has a finite amount of meaningful words, and we have been exploiting them as brand names for at least 80 years. All the words which convey something meaningful, along with most of the place-names, have been used up. You can already see the signs, with companies who wish to re-brand having to resort to 3-letter acronyms or meaningless quasi-Latin-sounding names. The same is true for all other languages, in fact most have fewer words than English.
'The signs that something is amiss are already there to see. You don't think any sensible CEO would choose to call their company Centrica, Avensis or Consignia do you? Or lumber them with some forgettable 3-letter acronym like, ooh I can't remember any but you know what I mean.’
Advertising agencies and management consultants are now hiring top lexicographers in an attempt to predict how long the industry can continue mining the English language. Predictions range from 5 years to just over a decade.
But one sceptic announced 'This is all bunk. Sure, we'll run out of meaningful words but so what? There are 17,576 three-letter acronyms out there, and if all else fails we'll simply do what Mercedes do now, and use numbers. OK so they don't have any character, but neither do today’s brand-names or products, and it doesn't seem to affect sales’
An advertising executive, who didn't want to be named, said:
'It's our industry’s dirty secret, the Wolf At The Door, the Mad Woman In The Attic. Nobody wants to talk about it because its effects on civilisation as we know it will be catastrophic.
'If you think about it, the English language only has a finite amount of meaningful words, and we have been exploiting them as brand names for at least 80 years. All the words which convey something meaningful, along with most of the place-names, have been used up. You can already see the signs, with companies who wish to re-brand having to resort to 3-letter acronyms or meaningless quasi-Latin-sounding names. The same is true for all other languages, in fact most have fewer words than English.
'The signs that something is amiss are already there to see. You don't think any sensible CEO would choose to call their company Centrica, Avensis or Consignia do you? Or lumber them with some forgettable 3-letter acronym like, ooh I can't remember any but you know what I mean.’
Advertising agencies and management consultants are now hiring top lexicographers in an attempt to predict how long the industry can continue mining the English language. Predictions range from 5 years to just over a decade.
But one sceptic announced 'This is all bunk. Sure, we'll run out of meaningful words but so what? There are 17,576 three-letter acronyms out there, and if all else fails we'll simply do what Mercedes do now, and use numbers. OK so they don't have any character, but neither do today’s brand-names or products, and it doesn't seem to affect sales’
Friday, 16 July 2010
Eighteen
Thirty years ago a thin young lass stepped into one of those red phone-boxes of the type you don't see any more except in museums and, possibly, next to the odd outdoor pool in places like Texas. She dialled a number, and asked the lady who answered, one question. The lady carefully read out three letters of the alphabet and, after a brief further chat, the call was over.
The lass stepped out into the morning sun and danced down the street singing her head off. I wonder if anyone in Lamorna, where we were on holiday at the time, remembers my 18th birthday? It was a coming-of-age that had everything: a sense of achievement (those letters being my A-level results), a memorable moment, and a step through to a new life.
Except, of course, that students aren't real adults, any more than is the newly-confirmed 16 year old, or the 14 year old Bat Mitvah, or indeed anyone who emerges from any of the long-established, but now no longer all-inclusive, coming-of-age markers in life. You grew up faster in the Iron Age: shorter life expectancy meant you couldn't hang about. So, all the best and most meaningful coming-of-age rites are completely out-of-phase with modern life. And we haven't bothered to come up with anything nearly as good.
This has always struck me as rather remiss of us. At no point in present-day life are we handed, unambiguously and in full view of all the people we care about, the responsibilities of an adult life, with the underlying message "You're one of us now. You know your stuff, and we trust you".
Sometimes, you step out into a wide new space and there are absolutely no landmarks. At what point can you be said to be grown-up?
The lass stepped out into the morning sun and danced down the street singing her head off. I wonder if anyone in Lamorna, where we were on holiday at the time, remembers my 18th birthday? It was a coming-of-age that had everything: a sense of achievement (those letters being my A-level results), a memorable moment, and a step through to a new life.
Except, of course, that students aren't real adults, any more than is the newly-confirmed 16 year old, or the 14 year old Bat Mitvah, or indeed anyone who emerges from any of the long-established, but now no longer all-inclusive, coming-of-age markers in life. You grew up faster in the Iron Age: shorter life expectancy meant you couldn't hang about. So, all the best and most meaningful coming-of-age rites are completely out-of-phase with modern life. And we haven't bothered to come up with anything nearly as good.
This has always struck me as rather remiss of us. At no point in present-day life are we handed, unambiguously and in full view of all the people we care about, the responsibilities of an adult life, with the underlying message "You're one of us now. You know your stuff, and we trust you".
Sometimes, you step out into a wide new space and there are absolutely no landmarks. At what point can you be said to be grown-up?
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