# Inverse-square law

In physics, an inverse-square law is any physical law stating that a specified physical quantity or strength is inversely proportional to the square of the distance from the source of that physical quantity.

The fundamental physical quantities that obey an inverse-square law are:

Gravitational force: The force of gravity between two masses is inversely proportional to the square of the distance between them.

Electromagnetic force: The force between two charges is inversely proportional to the square of the distance between them.

Light intensity: The intensity of light from a point source is inversely proportional to the square of the distance from the source.

Sound intensity: The intensity of sound from a point source is inversely proportional to the square of the distance from the source.

#### What does the inverse square law tell us?

The inverse square law tells us that the intensity of a point source of light (or any other kind of electromagnetic radiation) decreases in proportion to the square of the distance from the source. In other words, if the distance from the source is doubled, the intensity decreases by a factor of four. Which law is an inverse square law? The inverse square law is a law of physics that states that the force of attraction or repulsion between two objects is inversely proportional to the square of the distance between them. This law applies to both gravity and electromagnetism.

### What is the inverse square law GCSE?

In physics, the inverse square law is the principle that the force of attraction or repulsion between two objects is inversely proportional to the square of the distance between them. In other words, the closer two objects are to each other, the greater the force between them.

The inverse square law is a fundamental law of physics that governs the behavior of forces between objects. It is an important principle in many areas of physics, including electromagnetism, gravity, and nuclear forces. The inverse square law is also a key ingredient in the mathematical description of many physical phenomena, such as the distribution of light from a point source, the sound intensity from a point source, and the electromagnetic fields from a point charge. What is the inverse of square? The inverse of square is a mathematical operation that returns the original number when applied to the square of that number. It is the inverse operation to squaring. Who discovered inverse square law? The inverse square law was discovered by Sir Isaac Newton in 1687.