shynee said:Laser tweezer?
I don't have a clue, how they work.
Which parts of the Equaction are involved?
The integral of the Poyntig Vektors, and which more?
Poynting's Theorem is a fundamental law in electromagnetism that describes the relationship between the electric and magnetic fields in a region of space, and the flow of energy through that region. It was developed by English physicist John Henry Poynting in the late 19th century.
Poynting's Theorem is used to calculate the amount of energy carried by an electromagnetic field. It is also used to understand the direction and rate of energy transfer in a given system, such as in a circuit or electromagnetic wave.
The mathematical equation for Poynting's Theorem is:
S = (1/μ0)(E x B)
where S represents the energy flux density, E is the electric field, B is the magnetic field, and μ0 is the permeability of free space.
Poynting's Theorem is a statement of the conservation of energy in electromagnetic systems. It states that the total energy in a closed system remains constant, and any changes in energy are due to the flow of energy through the system.
Poynting's Theorem has many practical applications, including in the design and analysis of electronic circuits, antennas, and electromagnetic devices. It is also used in understanding the behavior of electromagnetic waves, such as in telecommunications and radar systems.