Magnets seem mysterious. Unseen forces pull magnetic materials together or, with the flip of one magnet, push them apart. The stronger the magnets, the stronger the attraction or repulsion. And, of course, the Earth itself is a magnet. While some magnets are made of steel, other types of ...
Iron, of course, is considered a ferromagnetic material. When exposed to a magnet, iron and iron alloys will stick to it. Other types of ferromagnetic materials include cobalt and nickel. Flexible magnets aren’t necessarily made of a pure ferromagnetic material. Rather, they are made of a ...
So, how does one magnet feel the presence of another magnet when they approach each other? I don't think physicists really know the answer to that. They know that the electromagnetic field is actually made of an enormous number of photons, but do virtual, massless photons make up the magn...
When compared to other ferromagnetic metals, titanium is weakly magnetic in the presence of a magnetic field. A specific effect is created with this metal. For example, a small electrical current will form in the metal when a magnet is passed over it. These currents have their magnetic field ...
英语(美国) 菲律宾语 Literally speaking, a magnet is a thing (it can be small or big) which attracts anything made of metal onto it. 查看翻译 这个答案有帮助吗? 嗯... (0) 有帮助 (0) ninyacarlota 2018年6月7日 英语(美国) 菲律宾语 This is circle thingy over here is a magnet ...
What are permanent magnet? Permanent magnets (ferromagnets) are magnetic materials. Permanent magnets are made of ferromagnetic materials such as iron. When the material is placed in the magnetic field, permanent magnets will be produced. When the magnetic field is eliminated, the object remains ...
Ancient people used lodestones, natural magnets made of the iron mineral magnetite. In fact, the word "magnet" comes from the Greek wordsmagnetis lithos, which means "Magnesian stone" or lodestone. Thales of Miletus investigated the properties of magnetism around 625 BCE to 545 BCE. The Indian...
A coil around a magnet can also be made to move in a pattern of varying frequency and amplitude to induce a current in a coil. This is the basis for a number of devices, most notably, themicrophone. Sound causes a diaphragm to move in and out with the varying pressure waves. If the...
Placing a cup magnet inside of the metal cup will secure it in place. Cup magnets can still be used in other applications, but they’ve become synonymous with cups. How Cup Magnets Work Like other types of permanent magnets, cup magnets are made of a ferromagnetic material. Most of them ...
Magnet Definition & Parts from Chapter 18/ Lesson 7 136K Learn about what a magnet is and be able to identify examples of magnetism in daily life. Understand the relationship between magnetism and electricity. Related to this Question What are magnetic fields made of?