How do we communicate in the modern world? (Sound (Travelling through…
How do we communicate in the modern world?
Sound waves travel at 332 m/s
Light waves travel at 299,792,000 m/s. There is nothing that has been discovered that is fast than light speed
At times where there are thunder and lightning storms, you can see the difference in speed. In each set of lightning and thunder, the flash of lightning comes first then the thunder follows. Both waves are created at the same time, and the difference in time of arrival shows the difference in speeds.
Sound waves are longitudinal waves which means that the direction of particle movement is parallel to the direction of the waves
Light waves are transverse waves which means that the direction of particle movement is perpendicular to the direction of the waves
There must be some sort of matter present for sound waves to travel. This is why sound can't travel through space since in space there is no matter.
Light doesn't need matter to travel. This means that light can travel through space just like how we get light from the sun
Sterilise surgical equipment
Killing cancer cells
Observing cosmic rays
Medical Images of bones
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
For a higher pitch, you have a higher frequency and a shorter wave length
If the amplitude is big, the sound is loud and if the amplitude is small, the sound is soft
Sound is vibrations that travel through medium and can be heard when they reach a person's or animal's ear
Travelling through mediums
At lower temperatures, molecules collide more often, giving the sound wave more chances to move around rapidly.
Sound travels faster in liquids than in gases because molecules are more tightly packed.
Sound travels fastest through solids. This is because particles are closer, allowing sound waves to travel more quickly