![]() ![]() However, it is theoretically suggested and practically proved that light also has particle characteristics. To get the idea of the speed of light, a good idea about light is essential. It can be shown that any object having a rest mass cannot obtain speed of light as it requires an infinite amount of energy. According to the theory of relativity the speed of light is the maximum velocity any object can hypothetically obtain. It is believed to be the only absolute parameter in the universe. Speed of light is a very important concept in modern physics. Some of these methods are single shot timing method and Kundt’s tube method. There are several experiments to measure the speed of sound. The speed of sound in a medium is equal to the square root of the coefficient of stiffness divided by the density of the medium (v = (C / ρ) 1/2). The speed of sound is defined as the distance the sound wave travels through an elastic medium per unit time. It must be noted that sound always requires a medium to travel. Sound can be considered as a set of pressure pulses. It is obvious that to create a sound there must be a mechanical oscillation. The amplitude of these oscillations decides the intensity of sound (how loud the sound is). A longitudinal wave oscillates the particles so that the oscillation is parallel. To be precise sound is a longitudinal wave. To understand the significance of speed of sound, one must first understand sound. This article will try to compare and discuss the differences between speed of sound and light. There is a huge significance of these concepts in fields ranging from communication to relativity and even quantum mechanics. In fact, hydrophones, or underwater microphones, if placed at the proper depth, can pick up whale songs and manmade noises from many kilometers away.Speed of light and speed of sound are two very important aspects of waves discussed under physics. The area in the ocean where sound waves refract up and down is known as the "sound channel." The channeling of sound waves allows sound to travel thousands of miles without the signal losing considerable energy. This causes the speed of sound to increase and makes the sound waves refract upward. ![]() Below the thermocline "layer," the temperature remains constant, but pressure continues to increase. The thermocline is a region characterized by rapid change in temperature and pressure which occurs at different depths around the world. Once the sound waves reach the bottom of what is known as the thermocline layer, the speed of sound reaches its minimum. ![]() As the whale’s sound waves travel through the water, their speed decreases with increasing depth (as the temperature drops), causing the sound waves to refract downward. The whale produces sound waves that move like ripples in the water. Imagine a whale is swimming through the ocean and calls out to its pod. These factors have a curious effect on how (and how far) sound waves travel. While pressure continues to increase as ocean depth increases, the temperature of the ocean only decreases up to a certain point, after which it remains relatively stable. While sound moves at a much faster speed in the water than in air, the distance that sound waves travel is primarily dependent upon ocean temperature and pressure. ![]()
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