See BBC News - 'Walkie-Talkie' skyscraper melts Jaguar car parts. Physics still works, even when you forget it or don't believe it.
Here in Argentina, cars catch fire when running normally. I can't understand why. Too many plastics inside them???
Many car fires are caused by leaking brake/clutch fluid. Not sure if this is true (or why), but I read somewhere that this is worse than petrol when it touches something hot like an exhaust manifold.
We have had a nice hot summer this year. There were days when even Scotland was warmer than the south of France!
There was a time when VW "Combi" catches fire because a defective (Design?) part in the escape, but now it problem is expanding to newer cars.
FLW was rather famous for ignoring physics and engineering. "Not my problem" Easy to understand why he made flat roofs and cantilevers that could not be supported and his icons are falling down. I think all his decent work was in the 19th century
Early BOSCH FI had rubber hoses to the injectors. When they were not changed as VW said, they would rupture with predictable results. Saab 99's, 914's and type 3's were all famous for this. Pinto's also had a rubber hose on the fuel pump that would split and cause fires. Far worse than the gas tank problem.
Early BOSCH FI had rubber hoses to the injectors. When they were not changed as VW said, they would rupture with predictable results. Saab 99's, 914's and type 3's were all famous for this. Pinto's also had a rubber hose on the fuel pump that would split and cause fires. Far worse than the gas tank problem.
Early on in my line of work I used to get very upset at the architects and their lack of judgement (aka common sense) until a wise old uncle of mine sat me down and explained they are not the 'end alls' they are simply the visionaries, the artists if you will. They will get the ball rolling and it's up to others to make it work. Pick up the pieces of you will. From that point on I took a much different view of and approach to Architects. I no longer look at them as the project 'gods'. I no longer try and bend the rules to make things work for them, I explain in simple language how it is going to be and have them redraw as necessary. Sure, you lose a few of the old timers along the way but many of them have told me how grateful they are for my input and especially about doing it in a closed door office.
They had a similar problem in Los Angeles when the Walt Disney Concert Hall opened -- the sun was focused uncomfortably on nearby buildings.
The Case Western Reserve Graduate School of Biz is a Gehry building -- apparently Gehry was not aware that it snows in Cleveland. All Gehry buildings leak, btw.
The Case Western Reserve Graduate School of Biz is a Gehry building -- apparently Gehry was not aware that it snows in Cleveland. All Gehry buildings leak, btw.
One of my friends had a flat sunroof on his house. Raindrops sitting on it would focus sunlight and burned his floor.
dave
dave
They must have been very flat raindrops! Most raindrops would have a focal length of less than an inch; beyond that the sunlight diverges. I think your friend needs to find a different explanation.
Not only cars...
Walkie Talkie building: 'Walkie Scorchie' skyscraper firm to put up scaffolding to protect nearby shops | Mail Online
The bright side: at night could be used as a telescope. 😀
Walkie Talkie building: 'Walkie Scorchie' skyscraper firm to put up scaffolding to protect nearby shops | Mail Online
The bright side: at night could be used as a telescope. 😀
I would call merged raindrops a puddle. A puddle, depending on its exact shape, could have quite a long focal length and so do some damage when the sun shines.
The entire glass wall is curved, so doesn't just reflect, it focuses the sunlight to a focal point. It may be a focal line but the article doesn't mention the optical gain.
It will happen whenever there is an object at the focal point of that curved mirror.
I believe they have identified 3 or 4 parking spots that will need to be vacant for about 2 weeks out of the year.
I believe the problem is more extensive than that. Over the course of a year, I suspect the focal point is going to sweep across other building windows and roofs, not just jaguars.
jn
It has already burnt a hole in a carpet and bubbled some paint.
On our TV news the focal area seemed to be a metre or two by perhaps 5-10 metres, so a fuzzy line. Still quite small given the size of the building. Assuming the windows are individually fairly flat I suppose the worst case would be a focus about the same size as a window so it is not worst case. People could walk through it without apparent harm, but I guess loitering could cause sunburn - depends on what the windows do with UV.
On our TV news the focal area seemed to be a metre or two by perhaps 5-10 metres, so a fuzzy line. Still quite small given the size of the building. Assuming the windows are individually fairly flat I suppose the worst case would be a focus about the same size as a window so it is not worst case. People could walk through it without apparent harm, but I guess loitering could cause sunburn - depends on what the windows do with UV.
According to the news they have measured 92C air temperature in the street where the light is reflected to.
People have been frying eggs by holding a pan into the beam.
People have been frying eggs by holding a pan into the beam.
Please re-read what was stated. edit: AS I also should.😱
Raindrops sitting on it was the key.
The focal length for a sphere is:
f = RN / 2(N-1)
R is sphere radius, N is index of refraction.
Water is 1.33
f = 1.33R/.66
f =2R.
Depending on the angle of the sun and the size of the droplet, I can see the focal point hitting the surface the drop sits on.
edit: The larger the drop on the sunroof gets, the longer the focal length will be. At some droplet size, it must match the distance from the sunroof to floor.
jn
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I saw 42C on a digital thermometer, and someone failing to fry an egg. Air temperature will be hardly affected, unless there is no breeze. More important is to measure pavement temperature. Journalists waving thermometers around clearly don't know what they are doing.
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