Young, first showed that diffraction of light waves occurs. Thomas Young conducted the double-slit experiment in the early 19th century, demonstrating interference patterns that confirmed light’s wave nature. This experiment provided fundamental evidence for the wave theory of light, showing ...
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The electromagnetic nature of light was discovered by Maxwell. James Clerk Maxwell, a Scottish physicist, formulated the theory of electromagnetism in the 19th century. He unified electricity and magnetism into a single set of equations known as Maxwell’s equations, predicting ...
The transverse nature of light waves is confirmed based on the phenomenon of polarization. Polarization demonstrates that light waves oscillate perpendicular to their direction of propagation. This is distinct from longitudinal waves, confirming that light behaves as a transverse electromagnetic ...
The wave theory of light was proposed by Huygens. Christiaan Huygens, a Dutch physicist and mathematician, put forth the idea in the late 17th century. He suggested that light propagates as a wave through a medium called the luminiferous aether, ...
Light wave is a transverse wave. Transverse waves are characterized by oscillations perpendicular to the direction of energy transfer. In the case of light, electric and magnetic fields oscillate perpendicular to the direction of propagation. This distinguishes light from longitudinal ...
Light is made up of small particles, which are called “Photon”. Photons are fundamental particles of light that exhibit both wave-like and particle-like properties. They have no mass and carry electromagnetic radiation.
The unit of measurement of sound intensity is Decibel (dB). Decibel is a logarithmic unit that quantifies the intensity or loudness of sound. It expresses the ratio of a sound level to a reference level, such as the threshold of ...
On hearing thunder, a person opens his mouth so that to equalize the air pressure on the eardrum of both the ears. This helps balance the pressure inside and outside the ears, reducing discomfort caused by sudden changes in atmospheric ...
The instrument used to detect submerged objects is called “Sonar”. Sonar stands for Sound Navigation and Ranging. It operates by emitting sound waves into water and detecting the echoes bounced back from underwater objects. Sonar is essential for applications like ...
The standard sound level for humans is 60 dB. This level represents the threshold of normal conversation and is commonly used as a reference point for measuring other sound levels. Sound levels above 85 dB can cause hearing damage with ...