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04-10-2010, 05:43 PM
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star-hopper
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Join Date: Jun 2005
Location: Terranora
Posts: 4,383
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'death ray' burns Las Vegas sunbathers
They should have thought of this! Astronomers would have.
"MGM Resorts International is taking the heat for an intense beam of searing desert sunlight, jokingly dubbed the "death ray", that some hotel guests say poses a risk of severe burns to bathers lounging poolside.
The beam is actually a concentrated reflection of solar rays bouncing off the gleaming glass facade of the concave-shaped, high-rise Vdara hotel and condominium, which opened on the Las Vegas "strip" in December.
Local media, as well as some hotel staff and guests, have come to refer to the reflection as the "death ray", but MGM Resorts officials prefer to call it a "solar convergence phenomenon".
"The refraction moves across the pool deck over a period of 90 minutes," company spokesman Gordon Absher said. "It's never in the same place from day to day or week to week because the sun is changing its elevation in the sky."
MGM Resorts, which owns the property, has sought to correct the problem by installing a high-tech solar film over each of the 3000 glass panes covering the south facade of the Vdara to scatter the rays.
But the concentrated sunlight remains hot enough at certain times, in certain spots, to melt plastic and singe hair, said William Pintas, 49, a Chicago lawyer and Vdara condo owner who first encountered the effect after a dip in the pool."
http://www.smh.com.au/travel/travel-...004-163gi.html
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04-10-2010, 06:01 PM
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pro lumen
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Join Date: Jun 2006
Location: ballina
Posts: 3,265
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Thats a funny read Glen
Strange how the death ray only wants to warm the towls of other guests .. yet wants to torch the injury lawyer 
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04-10-2010, 06:32 PM
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Fast Scope & Fast Engine
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Join Date: Nov 2006
Location: Broken Hill N.S.W
Posts: 3,305
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Not to bad on a cool day.
Typical lawyer tho.
The hotel may be observing there OH&S policy by providing free sunscreen to the guests.
Funny tho.
Cheers Kev.
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04-10-2010, 07:03 PM
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Worse or better?
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Join Date: Aug 2009
Location: Brisbane
Posts: 319
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Gold, imagine what they could do if they were trying to create a real death ray
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04-10-2010, 07:41 PM
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ze frogginator
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Join Date: Oct 2007
Location: Sydney
Posts: 22,079
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Vdara Hotel ? Sounds like Death Star business to me...  I wonder if the concierge is 7ft tall with a black helmet and heavy breathing?
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04-10-2010, 09:23 PM
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Narrowfield rules!
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Join Date: Nov 2006
Location: Torquay
Posts: 5,065
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A few well placed solar arrays and you have a "green" friendly hotel.
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04-10-2010, 11:43 PM
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Registered User
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Join Date: Mar 2008
Location: Wollongong
Posts: 3,819
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Quote:
Originally Posted by glenc
.......
"The refraction moves across the pool deck.....
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Is the building transparent??
  
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04-10-2010, 11:53 PM
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Like to learn
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Join Date: Jul 2007
Location: melbourne
Posts: 4,835
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They lost me in the refraction bit.
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05-10-2010, 12:37 AM
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Ebotec Alpeht Sicamb
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Join Date: Feb 2010
Location: Toongabbie, NSW
Posts: 1,975
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I'm with the lawyers on this one, this is pure negligence. Concave mirrors plus sun is a fire hazard, everybody knows that! Or at least everybody should
Cheers
Steffen.
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05-10-2010, 08:40 AM
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Stargazer
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Join Date: Jul 2009
Location: Brisbane, Australia
Posts: 842
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It figures. They were dumb enough to build a city out in the middle of the desert in the first place, the death ray is just the icing on the cake
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05-10-2010, 08:43 AM
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Registered User
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Join Date: Feb 2005
Location: Monto
Posts: 16,741
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Quote:
Originally Posted by Bassnut
A few well placed solar arrays and you have a "green" friendly hotel.
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What an excellent idea! Why waste such a resource?
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05-10-2010, 09:38 AM
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Registered User
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Join Date: Mar 2009
Posts: 349
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Quote:
Originally Posted by shelltree
It figures. They were dumb enough to build a city out in the middle of the desert in the first place... 
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That could never happen here.
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05-10-2010, 12:29 PM
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Support your local RFS
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Join Date: May 2006
Location: Wamboin NSW
Posts: 12,405
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This could be a good story line for CSI Las Vegas.
The only problem is we now know what's going to happen.
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04-02-2011, 05:55 PM
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star-hopper
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Join Date: Jun 2005
Location: Terranora
Posts: 4,383
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Follow up
Teen's 'solar death ray' can melt concrete
http://www.smh.com.au/technology/sci...204-1afxk.html
"A US teenager has built his own "solar death ray" out of thousands of mirrors that is capable of melting anything from metal to concrete.
Eric Jacqmain, 19, from Indiana, demonstrated the $US90 contraption in a YouTube clip and claims it offers the "power of 5000 suns". That claim is likely an exaggeration but the clip shows the ray can melt pretty much any object.
It is essentially a fibreglass satellite dish covered in 5800 small mirror tiles, which focus the sunlight into a spot the size of a coin when positioned correctly..."
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04-02-2011, 07:12 PM
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Registered User
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Join Date: Sep 2006
Location: Sydney
Posts: 1,847
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Quote:
Originally Posted by Zaps
That could never happen here. 
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It did. The Wentworth Hotel hotel in Sydney used to set passports on fire in Chifley Square
Cheers
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05-02-2011, 01:46 AM
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Support your local RFS
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Join Date: May 2006
Location: Wamboin NSW
Posts: 12,405
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Quote:
Originally Posted by glenc
Teen's 'solar death ray' can melt concrete
http://www.smh.com.au/technology/sci...204-1afxk.html
"A US teenager has built his own "solar death ray" out of thousands of mirrors that is capable of melting anything from metal to concrete.
Eric Jacqmain, 19, from Indiana, demonstrated the $US90 contraption in a YouTube clip and claims it offers the "power of 5000 suns". That claim is likely an exaggeration but the clip shows the ray can melt pretty much any object.
It is essentially a fibreglass satellite dish covered in 5800 small mirror tiles, which focus the sunlight into a spot the size of a coin when positioned correctly..."
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That's awesome, I think this lad is definitely in the running to be the next Bond super villian
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05-02-2011, 11:01 AM
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Registered User
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Join Date: Feb 2007
Location: Beaumont Hills NSW
Posts: 2,900
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Quote:
Originally Posted by Steffen
I'm with the lawyers on this one, this is pure negligence. Concave mirrors plus sun is a fire hazard, everybody knows that! Or at least everybody should
Cheers
Steffen.
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The mirrors (reflectors) do not need to be concave in fact plain reflectors would be better. Just imagine the heat generated if I took nine panes of glass in a window panel with nine panes then carefully adjusted the reflection of the sun from each pane to a point in the distance. The temperature at this point would be at least in the vicinity of 300 deg C
This so called "myth" has been around since I think it was Archamedes who used the principle to destroy a fleet.
Barry
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05-02-2011, 08:59 PM
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Registered User
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Join Date: Aug 2006
Location: Western Australia
Posts: 8,278
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This so called "myth" has been around since I think it was Archamedes who used the principle to destroy a fleet.
Barry[/QUOTE]
Never happened didn't you watch the Mythbusters episode
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