(read detail)? If sound travels faster in a denser medium, why is that it refracts away from the normal when it travels from a denser medium to a less denser medium? By right its velocity slows down, and refract towards the normal.
This thought came from my examination papers, why wave has a greater wavelength in the air (very high above) compared to the air just above ground at night. At night, the air just above the ground is denser (cooler). Many of my friends stated that it is due to the increment of the velocity from a denser to a less denser. V increase, Lamda increase. (using light wave concept) However, I always had the concept that sound waves and light waves are totally different.
Help me out here.. haha
This thought came from my examination papers, why wave has a greater wavelength in the air (very high above) compared to the air just above ground at night. At night, the air just above the ground is denser (cooler). Many of my friends stated that it is due to the increment of the velocity from a denser to a less denser. V increase, Lamda increase. (using light wave concept) However, I always had the concept that sound waves and light waves are totally different.
Help me out here.. haha