Write difference between sound wave and light wave.

Sound waves and light waves are both forms of waves, but they differ in several fundamental ways:

Nature of the Wave:

Sound Wave: Sound waves are mechanical waves, which means they require a medium (such as air, water, or a solid material) to travel through. They propagate by compressing and rarefying the particles of the medium.
Light Wave: Light waves are electromagnetic waves, which do not require a medium to travel through. They can travel through a vacuum, such as outer space, because they consist of oscillating electric and magnetic fields.
Speed:

Sound Wave: The speed of sound waves varies depending on the medium through which they are traveling. In air at room temperature, sound travels at approximately 343 meters per second (m/s).
Light Wave: The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s), often rounded to 3 x 10^8 m/s. Light can travel faster or slower in different materials, but its speed in a vacuum is constant.
Waveform:

Sound Wave: Sound waves are typically longitudinal waves, which means the particles of the medium move parallel to the direction of wave propagation. They create regions of compression and rarefaction in the medium.
Light Wave: Light waves are transverse waves, where the oscillations of electric and magnetic fields are perpendicular to the direction of wave propagation.
Frequency and Wavelength:

Sound Wave: Sound waves typically have lower frequencies (in the range of 20 Hz to 20,000 Hz for audible sound) and longer wavelengths (ranging from several centimeters to several meters).
Light Wave: Light waves have much higher frequencies, spanning a wide range of the electromagnetic spectrum, from radio waves (with long wavelengths) to gamma rays (with very short wavelengths).
Sensation:

Sound Wave: Sound waves are detected by our ears and perceived as auditory sensations. They allow us to hear sounds.
Light Wave: Light waves are detected by our eyes and perceived as visual sensations. They allow us to see objects and colors.
Reflection and Refraction:

Sound Wave: Sound waves can be reflected and refracted, but their behavior is primarily determined by the properties of the medium they are traveling through.
Light Wave: Light waves can also be reflected and refracted, but they exhibit additional phenomena like interference and diffraction, which are not commonly observed with sound waves.
Energy Transfer:

Sound Wave: Sound waves transfer mechanical energy from one point to another by causing vibrations in the medium.
Light Wave: Light waves transfer electromagnetic energy and carry information about the color, intensity, and polarization of light.
In summary, sound waves are mechanical, require a medium, and are associated with the sense of hearing, while light waves are electromagnetic, can travel through a vacuum, and are associated with the sense of sight. These fundamental differences in their nature, properties, and effects make sound waves and light waves distinct forms of wave phenomena.