The copper itself is not magnetic, but when its approached by magnets, the electrons on the surface of the copper being rotating. In an effort to resist the magnet’s pull, the electrons briefly create their own magnetic field, which slows down the magnet’s descent.

Copper can be extracted from its ores by reduction. One of the common copper ores, malachite, which is composed of mainly copper carbonate, CuCO3 Cu(OH)2, is heated to produce copper oxide with the release of carbon dioxide.

Malachite is a bright green, dark green, and black-green common secondary copper carbonate hydroxide (Cu2(CO3)(OH)2) mineral (Fig. Malachite is formed by surface weathering process of copper ore and generally not used for copper extraction mow due to insignificant resources and inadequate metallurgical recovery.

Copper can be extracted from non-sulfide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulfuric acid to produce a very dilute copper(II) sulfate solution.

Since iron is cheaper than copper, the use of scrap iron is a cost-effective way to produce copper from the leachate. Alternatively, the copper compounds can be dissolved and the solution electrolysed to produce copper metal.

If you mean “using only copper”, then yes. Any electric current has an associated magnetic field, so a current-carrying conductor is an electromagnet, regardless of what material it is made. Copper is usually used for the wire in electromagnets because it is fairly cheap, and it has a very low electric resistance.

Austenitic stainless steels contain nickel and are non-magnetic.

Great heat conductor: aluminum is one of the best metals for conducting heat, far better than stainless steel, in fact. Aluminum heats up quickly which allows you to get your cooking done faster and more efficiently. The heat is distributed evenly throughout the cookware, so your food is cooked evenly too.

Whether you’re talking about the casing or display, the stainless steel model offers better materials. The aluminum Apple Watch is a softer material, and the anodization could scratch or chip, as could its Ion-X-strengthened glass.

If you want cellular service, the nicer case material, more storage, Family Setup support, and Apple Music, that price might well be worth it.

Best Apple Watch Cases

• Our Top Pick: Otterbox Exo Edge Apple Watch Case.
• Best Budget: Caseology Nero Case.
• The Minimalist Pick: PITAKA Air Case.
• The Clear Pick: Spigen Liquid Crystal Clear Case.
• The Rugged Pick: Urban Armor Gear Case.
• Best Screen Protector: Belkin ScreenForce for Apple Watch.

Use a screen protector – The screen of your Apple Watch is made of tough material. In fact, the casing of your watch is more prone to damage than the screen. However, no matter how hard the screen is, it is still susceptible to scratches, which will make your watch look old and worn.

No, Apple does not advise or recommend that you need or should fit a screen protector. Whether or not to fit a screen protector is entirely a matter of personal preference. Do not use toothpaste or any other abrasive on your Apple Watch.

1. Infograph. My personal favourite Apple Watch face, and the one you’d likely see me sporting on my watch most often is the Infograph watch face.
2. 2. California.
3. GMT Watch Face (watchOS 7)
4. Liquid Metal, Fire/ Water Watch Faces.
5. Meridian.
6. Simple.
7. Siri Watch Face.
8. Numerals Duo.