Can children play with magnetic rods? 1. Magnetic stick toy series can open children's wisdom. Strong magnetic rods and metal balls are used for any combination and splicing. Because of the magnetic force, he can hold the ball and rod tightly, so he can use them to make various structures, such as bridges, houses, mathematical models, physical models, chemical models and geometric models. As long as you have full imagination, people can splice any imaginary structure.
2. By splicing the series of magnetic stick toys, children's spatial thinking ability can be cultivated and their intelligence can be turned on. By splicing the series of magnetic stick toys, children's attention can be concentrated and they can think in fun. By splicing the series of magnetic stick toys, children can be trained to understand the magnetism of matter from an early age.
3. Because the magnetic stick toy series can spell out various mathematical models, physical models, chemical models and geometric models, it is also an effective assistant for students to learn mathematics, physics, chemistry and geometry. This series of magnetic stick toys can also be used as modeling tools for architects and bridge experts.
The magnetic stick toy is special in that it has changed the simple play of children's toys in the past. It provides children with not only a toy, but also a material, an imaginary space and a mentor to accompany their children to grow up.
How to choose a good magnetic bar A good magnetic bar should have a uniform spatial distribution of magnetic induction lines, and the distribution of the maximum magnetic induction intensity points should fill the whole magnetic bar as much as possible, because it is usually placed on the moving product transmission line, and the surface of the magnetic bar should be smooth, with low resistance and without substances harmful to the environment, so as to avoid polluting materials and the environment.
The working environment of magnetic rod determines that it must have certain corrosion resistance and high temperature resistance, and in some cases it needs strong magnetic induction intensity. Different magnetic induction intensities can be obtained by using magnetic conductive sheets with different thicknesses. Choosing different magnets can determine the maximum magnetic induction strength and temperature resistance of magnetic rods. In general, to achieve the surface magnetic induction intensity above 10000 gauss on the conventional ∮25 magnetic bar, high-performance NdFeB magnetic steel is needed. Generally, Sm-Co magnetic steel is selected for high temperature resistant magnetic rods when the temperature exceeds 150℃. However, samarium and cobalt are not selected for large-diameter magnetic rods. After all, the price of samarium and cobalt is very high, and the price of a magnetic rod reaches tens of thousands of RMB.
The surface magnetic induction intensity of magnetic rods is directly proportional to the smallest particle size that can be adsorbed, but tiny iron impurities will also have great influence in the fields of batteries, pharmaceuticals and so on. Therefore, the magnetic roller (∮ 1 10-∮220) above 65438 gauss should be selected. You can choose a lower level in other fields.