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.
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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 ...