Researchers at the Stevens Institute of Technology in New Jersey used a 350-year-old mechanical theorem to uncover new connections between the fundamental properties of light. The theorem is typically used to describe the movement of large, physical objects like pendulums and planets. 

The researchers interpreted light’s intensity as an equivalent to physical mass. They mapped light onto a system where established mechanical equations could be applied. 

The theorem was published in 1673 by Christiaan Huygens. Huygens suggested that light waves traveled on an invisible “ether” that filled the void throughout air and space. He also suggested that each point in a light wave could be explained by miniature wavelets that combined to form a wavefront. 

The theorem can explain the quantum properties of light. It can also deduce difficult-to-measure optical properties such as: Amplitude, Phase, Correlation.

Christiaan Huygens was a Dutch mathematician, astronomer, and physicist. He developed the wave theory of light, which was published in 1678. Huygens believed that light was made up of waves that vibrated up and down perpendicular to the direction of the wave propagation.  He also believed that light waves traveled on an invisible “ether” that filled the void throughout air and space. 

Huygens’ theory of light states that light is made out of waves. He also calculated the laws of reflection and refraction. 

Huygens also: 

• Discovered the true shape of the rings of Saturn 
• Contributed to the understanding of mechanics when he determined that collisions between bodies neither lose nor gain momentum within the system

Qian and Izadi envisaged light as a mechanical system to which Huygens’ parallel axis theorem could be applied, and found a “profound” connection: the degree of a light wave’s polarization was directly related to the degree of a recently recognized property called vector-space entanglement.

The wave theory of light was first proposed by Christian Huygens in the 17th century.  Huygens was a Dutch physicist who lived from 1629 to 1695.  He created a mathematical model of the theory in 1678. He theorized that light was emitted from a source in all directions as a series of waves. He also proposed that the medium for these waves was a mysterious substance he called “luminiferous aether”. 

Huygens’ theory states that: 

• Light is an electromagnetic wave propagating through space. 
• Light is made up of waves vibrating up and down perpendicular to the direction of the light. 
• Light can refract or bend when traveling from one medium to another, reflect off shiny surfaces, and diffract around objects. 
• Every point that a luminous disturbance meets turns into a source of the spherical wave itself. 
• The sum of the secondary waves, which are the result of the disturbance, determines what form the new wave will take. 

James Clerk Maxwell refined the theory in the 19th century. Today, the wave theory of light is considered the backbones of optics

The wave theory of light was developed by Christiaan Huygens.  Huygens was a Dutch mathematician and astronomer. He published his theory in Traité de la Lumière in 1690.  He also derived the laws of reflection and refraction. 

Other people who contributed to the wave theory of light include: 

• James Clerk Maxwell Refined the theory in the 19th century. 
• Augustin-Jean Fresnel Helped establish the theory in the early 19th century. 
• Young Proved that the wave theory is correct for interference. 
• Planck Suggested that light is ma

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