How do you become an expert in matress explosions?
A German chap who attempted fix a leaking inflatable mattress with "industrial strength" puncture repair spray prompted an industrial strength blast which caused €150,000 (£129,000; $200,600) worth of damage to his rented gaff. The unnamed 41-year-old had just moved into a house in Diepholz in Lower Saxony and, being a bit …
Tyreseal is bloody useless for any job. If your alloys are leaking pop down your local independent tyre depot and ask them to sort it. They'll remove the tyre, wirebrush the corrosion off an apply a wheel rim sealant that does the job right.
Well, not fer nuthin', back in the early 80s I had a TR6 with Cobra slot mags that went porous, as a quick dip in the high tech tub-o-water at *my* local tyre depot showed.
I used a tyre sealant spray commonly available from Halfords and it worked perfectly, sealed the wheels for years and a tyre change. No leakage whatsoever.
All I did was follow the destructions on the can.
*That photo on El Presidente's link* - Holy Crap!
WTF is in that tyre sealant stuff? I reckon even if you put a full normal aerosol can on a BBQ in the middle of the room it would do some nasty stuff to the interior but not such structural damage.
Or else the house is made of cardboard and polystyrene
EDIT - it's actually a gas explosion - different house, different explosion then?
"I just can't see someone moving into a high end living space and sleeping on an air mattress."
I did - 10 week wait for the real bed to be delivered, and given completion dates tend to slide a bit risky placing the order beforehand (seems pointless paying to remove the old knackered bed).
Perhaps he had similar circumstances...
The actual description shows rather more drastic damage than the Reg version:
"Dabei wurden nach Schilderung von Polizeisprecher Frank Bavendiek vom Mittwoch sämtliche Türen aus der Verankerung gerissen, Fenster zerbarsten, die tragenden Wände erlitten Risse und Ziegel flogen vom Dach. Der Mann kam mit leichten Verletzungen ins Krankenhaus."
As a result, according to Police spokesman Frank Bavendiek on Wednesday, all the doors were torn from their hinges, windows shattered, load bearing walls suffered cracks and tiles blown from the roof. The man was admitted to hospital with light injuries.
So the cost is understandable, bit more than just a couple of doors and burst glazing. Bit hard if he does get punished for causing the explosion though. I suspect that that is just the usual, official statement to cover all possibilities.
I dont know where your pulling that from mate, but since the CFC's have been banned in all developed countries (they are still used in some developing countries but even they are fazing them out) the Ozone Layer has been repairing itself, and the hole is getting smaller.
I think the last projection I saw said 2025 for complete closure of the hole which is amazing considering that at its peak in the 90's the hole was larger than the size of Antartica and was even affecting South America and Tasmania on occasion.
So unless you want to provide evidence to attribute that level of increase in atmospheric ozone to the banning of something else, I think you're talking out your ass...
A very quick look online revealed multiple sources, stating that the Ozone Hole is decreasing in size.
Try wikipedia or perhaps the one below, its in nice and easy to understand language.
Although it appears I was optimistic on the closing date which appears to have moved out to 2050 now. But all the sources I just quickly googled say that it is on the mend.
Would you mind showing your sources?
> Would you mind showing your sources?
TOMS Nimbus-7 (1978 - 1993): http://ozoneaq.gsfc.nasa.gov/nimbus7Ozone.md
TOMS Meteor-3 (1991 - 1994): http://ozoneaq.gsfc.nasa.gov/meteor3Ozone.md
TOMS Earth probe (1996 - 2005): http://ozoneaq.gsfc.nasa.gov/earthProbeOzone.md
OMI (2004 - present): http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/OMI
OMPS (2011 - present): http://ozoneaq.gsfc.nasa.gov/beta/data/omps/
TOMS = Total Ozone Mapping Spectrometer
OMI = Ozone Monitoring Instrument
OMPS = Ozone Mapping & Profiler Suite
Basically, the polar "ozone hole" [not actually a hole, but a thinning layer] grows and shrinks on a pretty irregular basis. If you pick your dates (and sources) you can show growing or shrinking to your heart's content. Whether us puny humans have anything to do with it is another matter altogether - CFC's destroy ozone in a lab, but their impact in the upper atmosphere has never been proven [not an easy experiment to do, surprisingly enough].
Blaming an exploding mattress on the ban on CFC's to address the ozone hole - wonderful piece of El Reg commentary!
Pressurized tire sealants have always been explosive, a least here in the States. There's a lot more than propellant in soda can sized widget that both inflates and seals a punctured car tire.
Here there are big signs at the mechanics shops telling you to inform them if you've used sealant as a spark from the bead breaker can cause explosion; trashes the tire too...
"... trashes the tire too..."
I believe that's a myth. While I don't have personal experience here, I have read accounts from several peeps who have had the gunk scraped out and the tyre successfully repaired later. Some repair places may have propagated the idea that it's not possible, maybe because they don't know better, or can't be bothered.
One single aerosol can was able to create this much damage !!!! Can anyone explain if this really is possible.
I remember as a kid throwing aersols onto bonfires ( don't try this at home folks) there were little explosions but certainly nothing that could blow a door off its hinges.
he probably created a small MOAB (baby GBU-43/B) - just accidentally the correct stoichiometric fuel/air mixture - that can extract the full chemical energy from all the propellent wheras popping an old aerosol on a fire can sometimes just be a pressure relief with a teaspoon of non-optimally mixed accelerant.
I did read about a spraycan of air-freshner that was left on a windowsill in the UK - and when a few days of sunshine took it out - that removed the front wall of the house - maybe that was also a pop - then BOOM once the mixture was good/bad enough?
Google fuel-air-explosive (FAE) or thermobaric weapon.
Also known as a poor man's tactical nuclear weapon:
> They are, weight-for-weight, significantly more energetic than conventional
> condensed explosives. Their reliance on atmospheric oxygen makes them
> unsuitable for use underwater, at high altitude, and in adverse weather.
> Thermobaric explosives, however, cause considerably more destruction
> when used inside confined environments such as tunnels, caves, and
I worked on fire-control SW for an FAE weapons system years ago. It was basically a large morter shell what was little other than a can of propane/butane with a parachute that you 1) pop open, 2) let mix with air [this is the important part] and 3) ignite. Does all sorts of nasty things to people, buildings, and vehicles but doesn't kill the grass (or so I was told, I never witnessed a live-firing).
I was a bit doubtful at first, however...
A typical door is 6'6" x 2'6", or 2340 square inches. So a 1 p.s.i. overpressure would exert a force a little greater than one ton; ample to take the door off its hinges. 1 p.s.i. is about 1/15 atmosphere, so corresponds to a temperature increase of about 300/15, or 20 ºC. If there were no heat losses and enough air could get in without causing a draught, how much butane or similar stuff would it take to warm the air in a room by this amount? Not a lot.
Floors in domestic buildings are built to take an overall working load of around 1.5 kN/m2 plus a similar point load. This is under half a pound per square inch, so it's not surprising that even with a safety factor of two or three above design load buildings can come down in air-gas explosions.
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