Question

Compare and contrast sound and light. What limitations do most people have in regards to these waves? What limitations arise as people age? Waves of both kinds can be used in medical imaging; what are the pros and cons of using higher energy sound and light waves in these situations?

Answer 1

1. Sound waves require a medium. but light waves does not require medium.
2. Light waves in a vacuum go the fastest speed in the universe, tied with gravity. Because it goes through a medium, sound goes much slower.
3. We can see images using light because visible light waves are so small. Sound waves are much larger so we couldn't focus sound into an image the same way.
4. There's pretty much no maximum frequency of light. Since it goes through a medium, there is a maximum frequency of sound.
5. Sound waves and light waves carry energy.

High frequency sound waves are used in medical imaging ,but light waves are not used in medical imaging

Pros – with nuclear energy, countries can rely less on fossil fuels and thus limit hazardous atmospheric pollutants. Nuclear plants are considered to be one of the more cost effective alternatives to fossil fuels. The energy output is great.

Cons – the excavation of uranium and plutonium causes devastation to the surrounding environment. The waste from these excavations is also radioactive. If these are stored in a poor condition they lead to the contamination of surface and groundwater