History Fest electromagnet gold (Sturgeon) electromagnet. AD 1825 sucker electromagnet, Englishman William Stewart Kim (William Sturgeon magnets price, 1783 -1850 years) will have a current through a wire wound on an insulating rod, invented the electromagnet. American physicist Joseph Henry (Joseph Henry 1797 年 -1878 years) after the news that a small electromagnet in the soft core coil winding intensive use of the battery current is not after power, will be able to pick up a ton of iron. Increment equal to the outside world can send it to show the unit to joules. Only meaningful when the energy transfer can not say how much heat an object with position and speed permanent magnet state amount of kinetic energy momentum angular velocity pressure volume temperature enthalpy entropy change of free energy permanent magnets during impulse function within their means changing the amount of heat speed permanent magnet exercises. Acting and heat transfer is equivalent to refer here. It enables objects to change the same temperature. It enables objects to increase the same heat. It enables the object changed by the same internal energy. It is essentially the same phenomenon in which the following is by way of heat transfer can be changed within the object. Open the light switch inside the filament temperature can be increased. Summer soda on ice to hot weather. Cuocuo Shou winter will feel the hand become warm up. Solar water heaters in a sunlit water temperature gradually increased Xuehaiwuya Crossroads learn more secondary school secondary education accompanied trip Miles victory is a little progress every day. Double-elect the following statements is correct about the heat. High temperature heat contained in the multi-object. Contained within an object can have more calories and more. Heat within the same power and energy units. Process heat and power is the amount of internal energy is a state on the amount of heat transfer of the following statements is correct. Essence of heat transfer is the transfer of temperature. Temperature difference between the heat transfer objects competence occur. Electromagnet manufacturers | New Tong Xin magnetic (certified) | Fujian magnet provided by the Dongguan City, Tong Xin magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) is Dongguan, Guangdong, magnetic leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the new Tong Xin magnetic leadership with the staff warmly welcome all inquiries to discuss, with new magnetic Tong Xin a better future.