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Most Conductive Element - What Is the Most Conductive Element? Question: What Is the Most Conductive Element? Conductivity refers to the ability of a material to transmit energy. There are different types of conductivity, including electrical conductivity, thermal conductivity and acoustical conductivity. Here is a look at the three most electrically conductive elements. As you might expect, all three conductive elements are metals. Les maquettes Cette partie présente les maquettes d'investigations et les maquettes de manipulations. Quelle est donc la différence? La maquette d'investigations a pour but d'être manipulée, les élèves l'essayent, observent son fonctionnement et peuvent débrancher des capteurs et/ou des actionneurs, mais n'interviennent pas sur la partie programmation. La maquette de manipulations, les élèves placent les capteurs et actionneurs souhaités en fonction de ce qu'ils souhaitent réaliser et programment. Pourquoi avoir choisi PICAXE? c'est un système évolutif les élèves parviennent facilement à programmer le microcontrôleur via une programmation en diagrammes (flowcharts)le coût est raisonnable (logiciel de programmation gratuit)Picaxe est aussi compatible avec Yenka(external link), Automgen(external link), Pic Logigator(external link)
Hempcrete Can Change The Way We Build Everything ~ Why Don't You Try This? CNN report on eco friendly sustainable hemp house built in Asheville, NC. Benefits include carbon negative construction, breathability, and reduced cost of heating and cooling. Imagine you had a building material that was energy-efficient, non-toxic and resistant to mold, insects and fire.
Polypropylene Properties and Uses Polypropylene is a polymer substance. In other words, it is a macromolecule (or a very large molecule) formed by repetition of one structural unit of propylene several times. The small molecules of propylene are bonded with each other by the means of covalent type of chemical bonds. Polypropylene is a kind of polymer which gets transformed into liquid when it is heated. And when frozen, it turns into a glassy state. Hemp waste fibers form basis of supercapacitor more conductive than graphene Comprised of a lone hexagonal honeycomb lattice layer of tightly packed carbon atoms, graphene is one of the strongest, lightest, and most conductive compounds ever discovered. Bottom line, it’s an extraordinary composite. However, a scientist from New York’s Clarkson University says he’s found a way to manufacture hemp waste into a material “better than graphene.”
Wonder Material Mimics Desert Beetles and Cacti To Suck Water Out of Thin Air Inspired by a beetle's shell, a cactus spine, and the skin of a carnivorous plant, this slick, bumpy coating is a material straight out of Dune or Star Wars. Put this water-saving coating into a rain of steady droplets it condenses airborne water vapor into liquid 10 times faster than any other known material. "Imagine this kind of condensation system being used simply for water collection on a moisture farm, such as the one on Tatooine where Luke Skywalker was raised" Scientists Invent a New, Lighter Steel That's as Strong as Titanium From shipping containers to skyscrapers to turbines, good old steel is still the workhorse of our modern world. Now, scientists are discovering new secrets to make the material better, lighter, and stronger. Today a team of material scientists at Pohang University of Science and Technology in South Korea announced what they're calling one of the biggest steel breakthroughs of the last few decades: an altogether new type of flexible, ultra-strong, lightweight steel. This new metal has a strength-to-weight ratio that matches even our best titanium alloys, but at one tenth the cost, and can be created on a small scale with machinery already used to make automotive-grade steel. The study appears in Nature. "Because of its lightness, our steel may find many applications in automotive and aircraft manufacturing," says Hansoo Kim, the researcher that led the team.
Metal Foam Obliterates Bullets – and That’s Just the Beginning Composite metal foams (CMFs) are tough enough to turn an armor-piercing bullet into dust on impact. Given that these foams are also lighter than metal plating, the material has obvious implications for creating new types of body and vehicle armor – and that’s just the beginning of its potential uses. Afsaneh Rabiei, a professor of mechanical and aerospace engineering at NC State, has spent years developing CMFs and investigating their unusual properties. The video seen here shows a composite armor made out of her composite metal foams.
Scientists have turned cooking oil into a material 200 times stronger than steel Researchers have found a way to turn cheap, everyday cooking oil into the wonder material graphene - a technique that could greatly reduce the cost of making the much-touted nanomaterial. Graphene is a single sheet of carbon atoms with incredible properties - it's 200 times stronger than steel, harder than diamond, and incredibly flexible. Under certain conditions, it can even be turned into a superconductor that carries electricity with zero resistance.
Insulation Insulation acts as a barrier to heat flow and is essential for keeping your home warm in winter and cool in summer. A well-insulated and well-designed home provides year-round comfort, cutting cooling and heating bills by up to half. This, in turn, reduces greenhouse gas emissions. Climatic conditions influence the appropriate level and type of insulation. Establish whether the insulation is predominantly needed to keep heat out or in (or both). Insulation must cater for seasonal as well as daily variations in temperature (see ‘Insulation levels for your climate’ below). Conductors and Insulators In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them. "Conductor" implies that the outer electrons of the atoms are loosely bound and free to move through the material. Most atoms hold on to their electrons tightly and are insulators.