✨Vocab✨
Define Specular Reflection + examples
When you have a mirror-like surface in which light reflects off of.
Ex: mirror, still water
Scattering definition + examples
Ex: laser in haze
Red, Green, and Blue (RGB)
What do mechanical waves need that electromagnetic waves don’t?
A medium to go through
Why is light necessary for human vision?
It helps us to see color
Define diffuse reflection + examples
When light hits a surface and reflects at many angles
Ex: tin foil, moving water
Polarization Definition + examples
The act of dividing UV rays from sunlight
Ex: polarized glasses.
The three subtractive colors
Yellow, Cyan, Magenta
What are the similarities of mechanical and EM waves?
They can both be measured by amplitude, wavelength, and frequency
Hoe are rods and cones used to see colors and visible light?
They have certain colors that we can detect, which are red, green, and blue. Your eyes will make colors that we are seeing if the color in front of us in not red, green, or blue.
Define absorption + examples
When light is absorbed by matter and then converted to energy
Ex: glow-in-the-dark stickers, coal, black paint, green leaves
When added, what do the additive colors make?
White
Which EM wave has the most energy?
Gamma Waves
Define transmission + examples
Light hits and object that is transparent/translucent and light penetrates through
Ex: glass
When added, what do the subtractive colors make?
Black
Which EM wave has the least energy?
Radio waves
Define refraction + examples
The bending of light when it goes through a transparent object
Ex: prism, telescopes, ✨rainbows✨
The longest and shorted visibility light wavelength.
Longest: Red
Shortest: Violet