According to Huygens, the ether medium pervading the entire universe isA. Less elastic and denser.B. Highly elastic and less dense.C. Not elastic D. Much heavier. (2024)

FAQs

According to Huygens, the ether medium pervading the entire universe isA. Less elastic and denser.B. Highly elastic and less dense.C. Not elastic D. Much heavier.? ›

The ether medium was ideally supposed to be a highly elastic and less dense medium so that the light can travel through it with the least efforts. So, the correct answer is “Option B”.

Huygen considered, light needs a medium to propagate called ether which is highly elastic and less denser.

The wave theory of light is based on the assumption that there is a medium called ether that fills all space and carries light waves. This idea was first proposed by Christiaan Huygens in the 17th century and later developed by Augustin Fresnel in the 19th century.

Huygens' principle states that every point on a wave front may be considered as a source of secondary waves. The word interference is used to describe the superposition of two waves, whereas diffraction is interference produced by several waves.

Huygens suggested that light may be a wave phenomenon produced by mechanical vibrations of an all pervading hypothetical hom*ogenous medium called eather just like those in solids and liguid . This medium was supposed to be mass less with extremely high elasticity and very low density.

Luminiferous aether or ether (luminiferous meaning 'light-bearing') was the postulated medium for the propagation of light. It was invoked to explain the ability of the apparently wave-based light to propagate through empty space (a vacuum), something that waves should not be able to do.

In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.

ether, in physics, a theoretical universal substance believed during the 19th century to act as the medium for transmission of electromagnetic waves (e.g., light and X-rays), much as sound waves are transmitted by elastic media such as air.

Ether medium which can also be called as aether. This can be otherwise called a luminiferous ether in physics. The theoretical universal substance which is considered during the nineteenth century in order to act as the medium for the transmission of electromagnetic waves such as light and x-rays.

In the year 1678, Huygens assumed that every point to which a luminous vibration reaches becomes a source of a spherical wave, and therefore, the sum of these secondary waves helps us determine the form of the wave at any subsequent time.

What are the proportions of the universe? ›

Like the jelly beans in this jar, the Universe is mostly dark: about 96 percent consists of dark energy (about 69%) and dark matter (about 26%). Only about 5 % (the same proportion as the lighter colored jelly beans) of the Universe— including the stars, planets and us—is made of familiar atomic matter.

Refraction using Huygen's principle

The incident ray, reflected ray and the normal, to the interface of any two given mediums all lie in the same plane. We also know that the ratio of the sine of the angle of incidence and sine of the angle of refraction is constant.

Today the universe has expanded into an age and size that is physically only in parts observable as the observable universe, which is approximately 93 billion light-years in diameter at the present day, while the spatial size, if any, of the entire universe is unknown.

According to this theory the Universe expanded from an extremely small, extremely hot, and extremely dense state. Since then it has expanded and become less dense and cooler. The Big Bang is the best model used by astronomers to explain the creation of matter, space and time 13.7 billion years ago.