what is an inverse square law?

Answer 1

An inverse square law accounts for the way a property (such as sound energy) spreads out as though on the surface of a growing sphere. If you double the diameter of a sphere you increase its surface far more than merely doubling it. Light and sound intensity drop off quickly as a result. In contrast, if you back away from a wall of light or a wall of sound very little intensity is lost compared to light ir sound propagating from a point (for all practical purposes).

Answer 2

Any point source which spreads its influence equally in all directions without a limit to its range will obey the inverse square law. This comes from strictly geometrical considerations. The intensity of the influence at any given radius r is the source strength divided by the area of the sphere. Being strictly geometric in its origin, the inverse square law applies to diverse phenomena. Point sources of gravitational force, electric field, light, sound or radiation obey the inverse square law. It is a subject of continuing debate with a source such as a skunk on top of a flag pole; will it's smell drop off according to the inverse square law?

Answer 3

First:
The inverse square law is for Light Rays
it means that the intensity of illumination is inversly proportional to the square distance between the source of light & the reciever of the light ray

for example
if u r infront of a wall & u r holding a lighting torch, lets say that the distance between the torch & the wall is 2 meters, according to that law the area covered by the light of the torch on the wall is square that distance = 4 (m^2)

Second:
Theoritically:
The ONLY light ray that DOESN'T obey the inverse square law is LASER becouse Laser is extremely consentrated light rays (with the same wave length) & moving in the same direction

Practically:
The laser beam doesn't lose its intensity quickly, but LOSES it extremely slowly

i hope u got ur point from my explanation

Answer 4

x = 1/y^2

Answer 5

Where one quanitity is inversely proportional to the square of another quanitity. So if you double one quantity, another quanitity is quartered. For example the force between two objects due to gravity is an inverse square law. F = M.m/r^2. When you double the distance between two objects of masses M and m, the force between them is a quarter of the original force.

Answer 6

The number that is in question is placed in the denomitator, Calculated (divided) then squared.
It will make a number less than 1 be bigger, a number greater than one smaller.