Plastic siphon instead of cast iron. Drawing, description

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Plastic siphon instead of cast iron. Tips for the home master

Builder, home master

Undoubtedly, a plastic siphon for a washbasin is in many ways better than a cast iron one. But the trouble is that they are not interchangeable. Having thrown out the worn-out cast iron one and installed a plastic one, we are forced to fill the resulting annular gap with something, since the receiving pipe for the old siphon has an internal Ø 72 mm, and the outer diameter of the plastic pipe is only 40 mm.

I propose to put a washer Ø 72x40 and 20 mm thick, cut out of sheet rubber, into the gap.

Plastic siphon instead of cast iron

The connection is quite tight, and the assembly is easily disassembled when cleaning the sewer.

Author: A.Levetsky

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Anatoly Sokolov, an employee of Stanford University, together with fellow physicists, developed a method for obtaining carbon transistors based on DNA strands.

During the experiment, bacterial DNA was deposited on a silicon substrate, where the nucleic acid was stretched into almost even straight strands. Then the substrate with DNA was transferred to a sealed chamber with methane and heated. Under the action of heat, some of the carbon atoms were released from the DNA (in fact, the DNA on the substrate was charred). Methane molecules were attached to such atoms, forming thin carbon strips on the substrate.

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