Related Experiment Video
Updated: May 13, 2026
11:03
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Isaac Newton's physics of interparticulate forces and the aether queries
1Science, Technology and Innovation Studies, University of Edinburgh, Edinburgh, United Kingdom.
Annals of Science
|May 12, 2026
Summary
Isaac Newton initially rejected the aether but later proposed it might explain optical and gravitational phenomena. This was not a return to mechanical aether theories but a promotion of his speculative particle force physics.
Area of Science:
- Physics
- History of Science
Background:
- Newton's *Principia* (1687) presented a natural philosophy without an aether.
- Newton viewed a universal aether as unnecessary and detrimental to the world system.
Purpose of the Study:
- To analyze Newton's later speculative proposals regarding aether in the 1717 *Opticks*.
- To demonstrate Newton's aether concept was not a concession to mechanical theories but an extension of his particle-based physics.
Main Methods:
- Analysis of the "Queries" in the second English edition of Newton's *Opticks* (1717).
- Examination of Newton's shift in perspective on the aether and its relation to his broader physical theories.
Main Results:
- Newton's 1717 *Opticks* introduced an aether potentially responsible for optical and gravitational phenomena.
- This proposal was not a return to classical mechanical aether models.
Conclusions:
- Newton's later aether concept served to advance his speculative physics based on inter-particle forces.
- The aether in *Opticks* was a vehicle for exploring attractive and repulsive forces between minute particles.
More Related Videos
Related Concept Videos
01:17Newton's First Law: Introduction
Motion draws our attention. Motion itself can be beautiful, causing us to marvel at the forces needed to create spectacular sights, such as that of a dolphin jumping out of the water, the flight of a bird, or the orbit of a satellite. The study of motion is kinematics, but kinematics only describes the way objects move—their velocity and acceleration. Dynamics considers the forces that affect the motion of moving objects and systems. Newton's laws of motion are the foundation of dynamics. These...
01:10First Law: Particles in One-dimensional Equilibrium
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If we...
01:12Newton's First Law: Application
Experience suggests that an object at rest remains at rest if left alone, and that an object in motion tends to slow down and stop unless some effort is made to keep it moving. However, Newton's first law gives a deeper explanation of this observation. The study of Newton's laws is like recognizing patterns in nature from which further patterns can be discovered. The genius of Galileo, who first developed the idea for the first law of motion, and Newton, who clarified it, was to ask the...
01:15Newton's Law of Gravitation
Our everyday observation tells us that all objects close to the Earth naturally tend to fall to the ground. Early philosophers assumed that this downward force was unique to Earth. By the 16th century, Nicolaus Copernicus (1473-1543) put forward the heliocentric theory, which suggested that Earth and other planets orbited the sun, while the Moon orbited the Earth. However, it was Isaac Newton (1642-1727) who linked these two motions together in the 17th century. He reasoned that the force of...
01:06Force
Forces affect every moment of our life. Our bodies are held to the Earth by force, and they are held together by the forces of charged particles. When we open a door, walk down a street, lift a fork, or touch a baby's face, we are applying force. Our body's atoms are held together by electrical forces, and the core of an atom, called the nucleus, is held together by the strongest force known to us—nuclear force.
The study of motion is called kinematics, but kinematics only describes the way...
The study of motion is called kinematics, but kinematics only describes the way...
01:09Types of Forces
In most situations, forces can be grouped into two categories: contact forces and field forces. Contact forces occur as a result of direct physical contact between objects. Field forces, however, act without the necessity of physical contact between objects. They depend on the presence of a "field" in the region of space surrounding the body under consideration. You can think of a field as a property of space that is detectable by the forces it exerts. Scientists think there are only four...