Showing posts with label pseudo science. Show all posts
Showing posts with label pseudo science. Show all posts

2009-06-08

Crashing Bore

An Air France aircraft has recently crashed in the Atlantic and, while the victim's relatives try to come to terms with the tragedy, they will almost certainly learn nothing from the (UK) media.
Is there something about being a journalist which prevents even a basic understanding of the laws of aerodynamics, engineering or....just about anything?
This particular crash was well out of sight of any eye witnesses, and we can be thankful for that because it means that we are spared the inevitable stories of the "hero pilot" fighting the controls, not to save himself, or his passengers - but to steer the stricken craft away from a school.
A couple of things are certain in air crashes overland - aircraft are magnetically drawn towards schools and, irrespective of what has caused the accident, there is always just enough freedom of control available to the pilot to steer the aircraft away from those pesky children. Oh...and there is always an eyewitness with such phenomenal eyesight that he can somehow see (through aluminium) the pilot "wrestling" with the controls.
It is always enlightening to read the NTSB or AAIB accident reports because they often record these eyewitness statements and the fact is that two eyewitness to a crash can, and will, give completely opposing accounts of what happened. Later when the facts emerge, many of those witness accounts turn out to be utter bollocks.
In fact when you read the quotes from these witnesses, they are full of the uninformed hyperbole of a typical air crash report in The Sun or The Times. I think that the media inadvertently brain wash the public into reacting in certain way to certain events and the man in the street (or near the school) dutifully spouts his tabloid friendly description of events "The engines stalled..." etc. Talking of which, every journalist should be made to take an examination to show that they understand what an aerodynamic stall is and why that is nothing to do with the engines.
In the case of the Air France accident, about the only thing anyone has to go on is the automatic status reports from the aircraft. Unfortunately it is all a bit complicated for a pissed up journo to understand but there is enough there for some fantastically wild and uninformed speculation. Of course, Airbus aircraft have fly by wire, controlled by evil computers, rather than "hero" pilots - so the passengers were doomed anyway. The millions of safe flight hours in the A330 are instantly forgotten and, suddenly, it turns out that flying in an A330 is about as safe as flying the Icarus way, on an exceptionally sunny day.
An then, being the Internet age, we have the comments section. Inevitably the comments fall into two unevenly divided categories - incredibly stupid, and stupid. Usually split about 90-10 in favour of the incredibly stupid. As this was an Airbus, there have been a large number of comments from Yanks (usually in Seattle) proclaiming that this would have never happened to a Boeing, due to superior "strength", "traditional" engineering etc. Given that there have been one or two accidents to Boeing aircraft over the years, and that both makes of aircraft are certified by the same authorities to the same set of standards, I think that we can put those comments in the former category.
Then there are the armchair technical experts - I saw a comment from a bloke with an authoritarian tone who informed us that "big aircraft can't glide". His conclusion was that the engines had stopped, therefore pitching the aircraft into an uncontrollable dive. Really? So a big aircraft flies using different laws of physics to all other fixed wing aircraft? A quick look on Google for the glide ratio of the A330 reveals the following (after a total power loss due to fuel exhaustion) "The A330 referenced below went from 34500 and 85nm out to 13000 feet and 8nm out from Lajes. So 90 statue miles dropping 21500 feet or a glide ratio of 22:1 ..." Flying 22 metres for 1 metre loss of altitude doesn't exactly sound like a screaming death dive to me, mate.
The really frightening thing for me is not flying, it is the knowledge that, statistically, no matter where I sit, I am likely to be surrounded by complete fucking morons.

2009-05-26

Phone Masts and Physics for Dimwits

Are you one of those people campaigning for the removal of phone masts because you believe they are a risk to your health? You are? Oh dear. You need to read a physics textbook and learn about density of radio frequency energy and how that varies with distance.You will soon come to understand that you receive a much larger dose of RF from that thing you are pressing to your ear than from a mast at the end of your lovely garden.
Then read a book about how cellular radio works. If you have more than three brain cells left, you will realise that the less phone masts there are in your area, the more power your Iphone needs to emit and therefore the more your brain gets fried.
I was going to take the tack that this is another example of people expecting safety regulation to provide them with a risk free life but, on reflection, I've concluded that this "fear" is another example of the pseudo science that does the rounds on the Internet, is picked up by the thick as shit media, and feeds the subconscious desire of dimwits to either be scared of, or  outraged by something, or other, every bloody day. 
It is the modern equivalent of the medieval fear of witches though, so far, no one has been burnt at the stake because of it.
Then there is the hypocrisy element: how many of those screaming for the removal of phone masts have thrown away their phone? Not many I would guess.
Sometimes I feel that we are drowning in a sea of stupidity, but that is my own fault for reading the UK papers - as I have previously believed that we were drowning in a sea of feral children, while having our faces bitten off by millions of pit bull terriers, but my anxiety went away when the media moved onto something else - a nice feel good story. 
Like Katie Price and Peter Andre's upcoming divorce.