Waves
Electromagnetic waves with the longest wavelengths and lowest frequencies. They have lower frequencies than visible light.
Radio waves
Angle of incidence = angle of reflection
The law of reflection
What has higher frequencies than visible light?
X-rays
Your mom chose a beautiful green dress to wear to dinner. What colors of light does the cloth in the dress absorb?
Indigo, blue, orange, yellow
Electromagnetic waves with the shortest wavelengths and highest frequencies.
Gamma rays
A transverse wave composed of an oscillating electric field and a magnetic field that oscillates perpendicular to the electric field.
Electromagnetic waves
Light is composed of little packets of waves, Each individual packet can be thought of as a particle, called a photon.
Quantum mechanical theory of light
Infrared light is given off by any object that is losing heat. The human body is almost always losing heat to the environment. Why don’t human bodies glow at night then?
Because infrared light is not visible.
Why does the sky look blue on sunny days?
Blue light is scattered because the sun is high in the sky and light travels a shorter distance.
Electromagnetic waves that are visible to the human eye.
Visible light
The interaction of waves with other waves
Interference
Views light as two transverse waves, one made of an oscillating magnetic field and the other an oscillating electric field.
Wave theory of light
A lens that causes light rays to bend so that they converge to a single point.
What do we call light that vibrates in only one direction?
Polarized
The complete range of electromagnetic waves placed in order of increasing frequency?
Electromagnetic spectrum
Sound waves cause air to oscillate. What do light waves oscillate?
Magnetic and electric fields
Views a ray of light as a beam of individual particles called photons.
Particle theory
A lens that causes light rays to bend away from each other.
Diverging lens
What do we call a material in which light passes through but makes objects appear fuzzy?
Translucent
Part of the electromagnetic spectrum that consists of waves with frequencies between those of microwaves and visible light.
Infrared light
Which color of light waves have the highest frequency?
violet
What theory says that nothing with mass can travel faster than the speed of light.
Einstein’s Theory of Special Relativity
Light hits a mirror, making an angle of 15 degrees relative to a line drawn perpendicular to the mirror’s surface. What angle does the reflected light make with the same line?
15 degrees relative to the line
List the color spectrum corresponding to the smallest wavelength first, and end with the color that corresponds to the longest wavelength.
VIB G YOR
Electromagnetic waves that are shorter than visible light with frequencies higher than violet light.
Ultraviolet radiation