kenttävoimakkuuden

Kenttävoimakkuus, often translated as field strength, is a fundamental concept in physics, particularly in electromagnetism and gravitation. It quantifies the intensity of a force field at a specific point in space. In electromagnetism, electric field strength is a vector quantity representing the force experienced by a unit positive charge at that point. It is typically measured in volts per meter (V/m) or Newtons per Coulomb (N/C). Similarly, magnetic field strength is a vector quantity describing the force exerted on a magnetic pole or a moving charge. It is commonly measured in Amperes per meter (A/m) or Tesla (T). In the context of gravity, gravitational field strength at a point is the acceleration that a test mass would experience if placed there, essentially the gravitational force per unit mass. It is measured in meters per second squared (m/s²). The field strength decreases with distance from the source creating the field, following inverse square laws in many common scenarios. Understanding field strength is crucial for analyzing the behavior of charged particles, magnetic materials, and celestial bodies, forming the basis for many physical theories and technological applications.