Question

Light is in which state.

Answer 1

both as particle and wave

!!
some experiments say its wave nature!! some experiments say its particle!!!

Answer 2

yes, correct chmvijay it has so called dual nature, corpuscular one, and wave one, at the same time.

Answer 3

If you are asking about whether it is solid or gas etc, then the the answer is that you can not classify light into state. This is because light is not matter but its a form of energy. And as a form of energy currently it is in dual form - wave and photons.

Answer 4

thank u so much..u all.

Answer 5

recent studies have provoked a question that light is generated by oscilating electric and magnetic field then how two electrmagnectic waves generate a particle or what earlier said corpuscles.this what....strengthns light wavw nature..............

Answer 6

very logical..thanks..

Answer 7

never say.........

Answer 8

Particle theory
Main article: Corpuscular theory of light
Pierre Gassendi.

Pierre Gassendi (1592–1655), an atomist, proposed a particle theory of light which was published posthumously in the 1660s. Isaac Newton studied Gassendi's work at an early age, and preferred his view to Descartes' theory of the plenum. He stated in his Hypothesis of Light of 1675 that light was composed of corpuscles (particles of matter) which were emitted in all directions from a source. One of Newton's arguments against the wave nature of light was that waves were known to bend around obstacles, while light travelled only in straight lines. He did, however, explain the phenomenon of the diffraction of light (which had been observed by Francesco Grimaldi) by allowing that a light particle could create a localised wave in the aether.

Newton's theory could be used to predict the reflection of light, but could only explain refraction by incorrectly assuming that light accelerated upon entering a denser medium because the gravitational pull was greater. Newton published the final version of his theory in his Opticks of 1704. His reputation helped the particle theory of light to hold sway during the 18th century. The particle theory of light led Laplace to argue that a body could be so massive that light could not escape from it. In other words it would become what is now called a black hole. Laplace withdrew his suggestion later, after a wave theory of light became firmly established as the model for light (as has been explained, neither a particle or wave theory is fully correct). A translation of Newton's essay on light appears in The large scale structure of space-time, by Stephen Hawking and George F. R. Ellis.

Cited From: http://en.wikipedia.org/wiki/Light

Answer 9

Wave theory

In the 1660s, Robert Hooke published a wave theory of light. Christiaan Huygens worked out his own wave theory of light in 1678, and published it in his Treatise on light in 1690. He proposed that light was emitted in all directions as a series of waves in a medium called the Luminiferous ether. As waves are not affected by gravity, it was assumed that they slowed down upon entering a denser medium.
Thomas Young's sketch of the two-slit experiment showing the diffraction of light. Young's experiments supported the theory that light consists of waves.

The wave theory predicted that light waves could interfere with each other like sound waves (as noted around 1800 by Thomas Young), and that light could be polarised, if it were a transverse wave. Young showed by means of a diffraction experiment that light behaved as waves. He also proposed that different colours were caused by different wavelengths of light, and explained colour vision in terms of three-coloured receptors in the eye.

Another supporter of the wave theory was Leonhard Euler. He argued in Nova theoria lucis et colorum (1746) that diffraction could more easily be explained by a wave theory.

Later, Augustin-Jean Fresnel independently worked out his own wave theory of light, and presented it to the Académie des Sciences in 1817. Simeon Denis Poisson added to Fresnel's mathematical work to produce a convincing argument in favour of the wave theory, helping to overturn Newton's corpuscular theory. By the year 1821, Fresnel was able to show via mathematical methods that polarisation could be explained only by the wave theory of light and only if light was entirely transverse, with no longitudinal vibration whatsoever.

The weakness of the wave theory was that light waves, like sound waves, would need a medium for transmission. A hypothetical substance called the luminiferous aether was proposed, but its existence was cast into strong doubt in the late nineteenth century by the Michelson-Morley experiment.

Newton's corpuscular theory implied that light would travel faster in a denser medium, while the wave theory of Huygens and others implied the opposite. At that time, the speed of light could not be measured accurately enough to decide which theory was correct. The first to make a sufficiently accurate measurement was Léon Foucault, in 1850.[18] His result supported the wave theory, and the classical particle theory was finally abandoned, only to partly re-emerge in the 20th century.

Cited From: http://en.wikipedia.org/wiki/Light

Answer 10

Light is a solid thing that is not an obstruct!

Answer 11

I do not have enough information about it. Sorry!

Answer 12

simply ...light is a form of energy..it is transversal electromagnetic wave having both wave and particle nature ...
interference effect shows wave nature and photo electric effect shows particle nature .

Answer 13

I think all of the statement above are very good answers so I would like to add mine.
Light can be in both particle and wave state.
The first time, Albert Einstein proived with his photon theory that light is in state of particle.
However, years later Max Plank with his plank formula proved that light also can be as wave particles too.
Best,
Fakhriddin