Human Senses and Energy - EMS Spectrum & RRA

What is the electromagnetic spectrum?

A series of electromagnetic waves (waves of energy) that start with the lowest frequency and longest wavelength and go to the highest frequency and shortest wavelength.

What does it mean to reflect light (reflection)?

Light hits a smooth surface, and a mirror image of the light bounces off of the surface. I

Can we see all the waves on the electromagnetic spectrum?

Most waves on the electromagnetic spectrum are invisible to us (we cannot see them).

Are the waves at the beginning of the electromagnetic spectrum dangerous?

No, because they have long wavelengths and low frequencies.

What type of wavelength and frequency are at the end of the electromagnetic spectrum?

These waves have short wavelengths and high frequencies.

What type of wavelength and frequency are at the beginning of the electromagnetic spectrum?

Theses waves have long wavelengths and low frequencies.

What waves can we see on the electromagnetic spectrum?

We can only see one type of wave on the electromagnetic spectrum and that is VISIBLE LIGHT.

Why do we see apples as the color red?

We see apples as the color red because all of the other colors (wavelengths) are absorbed by the apple except for red. The red light bounces off of the apple, so we see it as red.

Why do we see bananas as yellow?

We see bananas as yellow because all of the other colors (wavelengths) are absorbed be the banana except the color yellow. The yellow light bounces of the banana, so we see it as yellow.

Why do we see the color black?

We see the color black because all of the colors (wavelengths) are absorbed by the object. This means that none of the colors bounce off of the object thus making it appear black.

Why do we see the color white?

We see the color white because all of the colors (wavelengths) bounce off of an object. Thus this makes us see objects as white.

absorption of light

When light hits a surface, some of its colors (wavelengths) are taken in and not reflected. We only see colors that are reflected off of the object.

What does it mean to refract light (refraction)?

When light passes from one medium to another, it slows down the speed of the light wave. Thus it makes us appear as if the object is bending.

Are the waves at the end of the electromagnetic spectrum dangerous?

Yes, because they have have short wavelengths and high frequencies.