Magnets are materials that produce magnetic fields, which attract specific metals. Every magnet has a north and a south pole. Opposite poles attract, while like poles repel. While most magnets are made from metals and metal alloys, scientists have devised ways to create magnets from composite mat...
We are made of atoms that contain electric charges. Why we do not feel any electric force in our daily life? All atoms have moving electric charges. Then, why aren't all materials magnetic? Why do like charges and poles repel, unlike charges and poles attract?
This idea is commonly used with low-coercivity magnetic materials, such as iron or Alnico magnets. For example, the magnets used in door and window alarm sensors are usually long, cylindrical Alnico magnets. We discussed the influence of shape on magnetization in some detail in our in-depth ...
Working with lattice-gas models, we give evidence that even at zero temperature matter does not always tend to form crystals; unit cells may tend to go out of phase. In particular, our results imply that noncrystalline equilibrium materials such as quasicrystals and incommensurate solids are not...
reorganisation of the reception lobby and ground floor dining room and the use of a rich muted palette of materials and colours. Dusky grey walls are 帮助变换站点成老练,并且亲密的饭厅和酒吧包括一个大规模遮篷的设施的钥匙移动,预定了窗口招待会大厅和基层饭厅的快门、整顿和对材料和颜色一个深无言调色...
Why are parts of aquaporin nonpolar? Why does a current-carrying wire produce a magnetic field? Why are coordination compounds important? Why is density referred to as a characteristic property of matter? (a) How can static electricity be (i) useful and (ii) dangerous? (b) How can electric...
aI created chances for the students to retell the story and gave some more information. Most of the students are willing to show their abilities before others. And most of the students hope to be praised and encouraged by the teacher and other students. Therefore I challenged them to retell ...
aNo microarcs being present during deposition suggests that the electric field caused by the charge accumulation is not strong enough for insulation breakdown to occur microarcs是存在证言期间不建议充电储积造成的电场不是足够强的为了绝缘材料故障能发生[translate] ...
The experimental problems linked to the use of the ultra-wide band high field-high frequency Electron Paramagnetic Resonance (HF 2 -EPR) spectrometers are illustrated with some key examples. The single pass technique is critically analyzed and compared with other techniques. Propagation and magnetic ...
aYou can not improve past ,you can improve future ! 您不可能改善 通过,您能改善 未来![translate] aI don't know why love you, but I know, you are my don't love others reasons. 我不知道为什么爱您,但我知道,您是我不爱其他辩解了。[translate]...