The moon, the moon, the moon in the last days is generated from the underground world according to Fan Bin, and the moon in the last days has a very important position in this world, since Lin Feng discovered that the energy component of the moon is composed of particles that can store energy and reflect energy, Lin Feng knew that there may be other secrets in this world, and these secrets can help Lin Feng enhance his own energy. Pen, fun, pavilion www. biquge。 info

Energy is a measure of how much the spatial and temporal distribution of mass is likely to change, and is used to characterize the ability of a physical system to do work. In the last days and in the original world, it has been proved that there is a reciprocal relationship between matter and energy.

Energy exists in many different forms; According to the classification of different forms of motion of matter, energy can be divided into mechanical energy, chemical energy, thermal energy, electrical energy, radiation energy, nuclear energy, light energy, tidal energy, etc. These different forms of energy can be converted into each other through physical effects or chemical reactions. Various fields also possess energy.

Corresponding to the various forms of motion of matter, there are also various forms of energy, which can be converted into each other in a certain way.

It is the sum of the kinetic energy of the irregular motion of the molecules in the system, the potential energy of the interaction between the molecules, and the energy in the atoms and nuclei, but does not include the mechanical energy of the overall motion of the system.

Spatial properties are the extensible embodiment of material motion; The temporal property is the continuous embodiment of the movement of matter; The gravitational property is the embodiment of the interaction caused by the uneven mass distribution in the process of motion of matter. Electromagnetic properties are the external manifestations of charged particles during motion and change, and so on. There are various forms of movement of matter, and there is a corresponding form of energy for each specific form of material movement.

The form of energy corresponding to the mechanical motion of a macroscopic object is kinetic energy; The energy form corresponding to the motion of the molecule is heat; The form of energy corresponding to the motion of atoms is chemical energy; The form of energy corresponding to the directional motion of charged particles is electrical energy; The corresponding form of energy for photon motion is light energy, and so on. In addition to these, there is also wind energy, tidal energy, etc. When the form of motion is the same, the motion characteristics of an object can be described in terms of certain physical or chemical quantities. The mechanical motion of an object can be described in terms of physical quantities such as velocity, acceleration, momentum, etc.; Current can be described in terms of physical quantities such as current intensity, voltage, power, etc. However, if the forms of motion are not the same, the only physical quantity in which the properties of matter can be described and compared with each other is energy, which is the common property of all moving matter.

Energy can be stored in a system without being expressed as material, kinetic or electromagnetic energy. When a particle moves a distance in a field with which it interacts (with the help of an external force), the energy required for the particle to move to a new position in the field is stored. Of course, the particle must be kept in the new position by an external force, otherwise the field in which it is located will return the particle to its original state by pushing or pulling. This stored energy, which is stored by the particle changing its position in the force field, is called potential energy (potential energy). A simple example is that the work required to lift an object up to a certain height in a gravitational field is potential energy (potential energy).

Any form of energy can be converted into another form. For example, potential energy can be converted into kinetic energy when an object moves freely to different positions in a force field. When energy is in the form of non-thermal energy, it can be converted into other kinds of energy with high or even perfect efficiency, including the generation of electricity or new particles of matter. However, if it is thermal energy, there will always be a limit to the conversion efficiency when it is converted to another form, as described by the second law of thermodynamics.

In the process of all energy conversion, the total energy remains the same, because the energy of the total system is the transfer of energy between the systems, and when energy is lost from one system, another system must gain the lost energy, resulting in a balance between loss and gain, so the total energy does not change.

Although the total energy of a system does not change over time, the value of its energy may vary depending on the frame of reference. For example, a passenger sitting in an airplane has zero kinetic energy relative to the airplane; However, relative to the Earth, kinetic energy is not zero, and it cannot be compared with the Earth in terms of momentum alone.

According to the kinetic energy theorem, if a moving object is hindered and slows down until it stops, the object will do work on the obstacle. The amount of work done is equal to the amount of the original kinetic energy of the object. Hence it can be said that kinetic energy is the functional force that an object has due to its motion. For example, a high-speed flying bullet has kinetic energy, so it can penetrate the steel wrench when it hits the steel plate; The hammer hammer hammer that is hammered onto the forging has kinetic energy, so it can do work on the forging and deform it.

The energy released or absorbed when a substance undergoes a chemical change (chemical reaction). Its essence is the energy released by the change of the outer electrons of the atom, which leads to the change of the electron binding energy. The annihilation of electrons and negative electrons into photons is the energy of the electrons' static energy converted into photons.

The kinetic energy of the thermal motion of atoms and molecules inside a substance, the higher the temperature, the greater the thermal energy contained in the substance. The heat engine is the expanding water vapor that turns its heat energy into the kinetic energy of the heat engine.

The binding energy of the nucleus of an atom, which can be released in a nuclear fission or fusion reaction into the kinetic energy of the reaction product. Hence, the object also has energy when it is at rest. The energy and mass of matter are closely related. The mass of the nucleus is smaller than the total mass of the nucleons that make it up, that is, when the free nucleons combine into the nucleus, energy is released, and this energy is called the binding energy of the nucleus. The energy released by a heavy nucleus with a low specific binding energy (the binding energy per nucleon per nucleon) is fissioned into a lighter nucleus with a higher specific binding energy, or several light nuclei with a lower specific binding energy are fused into a heavier nucleus with a higher specific binding energy.

Based on a large number of experiments, the law of conservation of energy has been confirmed, that is, when different forms of energy are converted to each other, their quantities are conserved. The Joule thermal work equivalent experiment was a well-known experiment that confirmed the law of conservation of energy in the early days, and then established the first law of thermodynamics of energy conversion and conservation in the macroscopic field. The Compton effect confirmed that the law of conservation of energy is still true in the microscopic world, and then gradually realized that the law of conservation of energy is determined by the invariance of time translation, making it a universal law in physics (see Symmetry and Conservation Law). In a closed mechanical system, mechanical energy is conserved if there is no interconversion between mechanical energy and other forms of energy. The law of conservation of mechanical energy is a special case of the law of conservation of energy. (To be continued.) )