New York scientists have come up with an invisibility cloak

When you read Harry Potter, do you have the only guide to an invisibility cloak? Scientists at the University of Rochester have found a way to use a cheap and easily available lens to hide large objects in sight, which appears to have emerged from the Harry Potter fantasy series. Disguise is the process by which an object becomes hidden, and everything around it appears to be calm. "A lot of people have been working in different aspects of optical invisibility for years," said John Howell, a professor of physics at the University of New York's Northern Territory, on Friday.
The so-called rochester cloak is not a real cloak. Instead, the device looks like an optometrist's device. When the object is placed behind the laminar lens it seems to disappear. Previous camouflaging methods have become complicated, expensive, and cannot view three-dimensional hidden objects from different perspectives, they said. "As far as we know, this is the first time the invisible device can provide three-dimensional, continuous and multi-directional camouflage," said graduate student Joseph Cui, who helped develop the method in Rochester, which is known for its optical research.
In their tests, the researchers had invisible hands, a face and a ruler, making each object “invisible” while the image behind the hidden object remained in the view. The impact on discovery is endless, they say. "I think this may be used to cover up the back of the truck's upper semi truck so that the driver can see him directly behind him," he said. "It can be used in surgery, interior design, art, etc."

Elbow,bend equal /reduce tee,concentric/eccentric reducer , cap,flange

Size

Seamless(SMLS) Elbows : 1/2"-24" ,DN15-DN600

Butt Welded Elbows (seam) :24"-72",DN600-DN1800

Type

LR 30,45,60,90,180 degree SR 30,45,60,90,180 degree

1.0D, 1.5D, 2.0D, 2.5D, 3D,4D,5D,6D,7D-40D.

Thickness

SCH10,SCH20,SCH30,STD SCH40, SCH60, XS, SCH80., SCH100, SCH120, SCH140, SCH160, XXS

Standard

ASME,ANSI B16.9;

DIN2605,2615,2616,2617,

JIS B2311 ,2312,2313;

EN 10253-1 ,EN 10253-2

Material

ASTM

Carbon steel(ASTM A234WPB,,A234WPC,A420WPL6.

Stainless steel(ASTM A403 WP304,304L,316,316L,321. 1Cr18Ni9Ti, 00Cr19Ni10,00Cr17Ni14Mo2, ect.)

Alloy Steel:A234WP12,A234WP11,A234WP22,A234WP5,

A420WPL6,A420WPL3

DIN

Carbon steel:St37.0,St35.8,St45.8

Stainless steel:1.4301,1.4306,1.4401,1.4571

Alloy steel:1.7335,1.7380,1.0488(1.0566)

JIS

Carbon steel:PG370,PT410

Stainless steel:SUS304,SUS304L,SUS316,SUS316L,SUS321

Alloy steel:PA22,PA23,PA24,PA25,PL380

GB

10#,20#,20G,23g,20R,Q235,16Mn, 16MnR,1Cr5Mo,

12CrMo, 12CrMoG, 12Cr1Mo

Pipe Fittings

Pipe Bends, Elbow Fittings, Cross Fittings, Thread Pipe Fittings

Cangzhou Weiheng Pipe Industry Co.,Ltd , http://www.czweiheng.com