Studied by 8 peoplef = 1 / T
The formula of frequency.
Wavelength
The distance travelled by a wave in one complete oscillation.
Frequency
The number of oscillations completed in one period.
v = f * wavelength
Velocity’s formula.
Hz = 1 / s = waves vibration cycles / s
Hertz’s formula.
Constructive interference
Occurs when the crests of one wave overlap the crests of the other wave and cause an increase in wave amplitude.
Destructive interference
Occurs when the crests of one wave ovelap the troughs of the other wave and cause a decrease in wave amplitude.
Electromagnetic waves
Waves that are made of electric and magnetic waves.
Electromagnetic spectrum
The range of all types of EM radiation; includes: radio and TV, microwaves, infrared, ROYGBIV, ultraviolet, X-rays, gamma rays.
perpendicular
Electromagnetic waves move __ to the direction of travel.
380 - 750
Human eyesight is from __ mm.
Color
The frequency of light.
Primary light colors
Colors that can be combined in diferent proportions to make all other colors, and visible to human’s eyes such as red, green, and blue.
White
A combination of all the wavelengths/colors; made of red, green, and blue.
Black
An absence of light; made of magneta, cyan, and yellow.
Primary pigments
Magneta, Cyan, and Yellow.
Paint ; Light
__ is subtractive ; __ is additive.
particle
Light acts like a __ in the photoelectric effect experiment.
waves
Light and electrons act like __ in the double slit experiment.
particles
Electrons act like __.
Photon
A light particle; or a group of energy, not a real particle, no mass, one quantum of energy.
wavelength = planck’s constant / momentum (m*v)
De Brogile Equation
6.63×10^-34 m²kg/s
Planck’s constant
Quantum mechanics
Used at atomic sizes when the rules of large scale.
wavelength / w = x / L
Single slit’s formula
y = (m * wavelength * D) / d
Double slit to Diffraction Grating’s formula
n1 * Sina1 = n2 * Sina2
Snell’s law
C = 3×10^8 m/s
Speed of light
n = Sin i / Sin r
Air into substance’s formula
Total internal refraction
Optically denser to optically less denser; the light ray will not eneter the new medium but will be completely reflected back into the original medium.
n = 1.33
Water’s index of refraction
n = 1
Air’s index of refraction
The critical angle
The angle of incidence at which a light ray passing from one medium to another less refractive medium experiences an angle of refraction of 90 degree.
n1 * Sina = n2 * Sin90
Total internal reflection’s formula
1 / f = 1 / di + 1 / do
Lens or Mirrow Law
M = hi / ho = di / do
Magnification’s formula
2 x f
Curvature of the lens
Images
Real or virtual, upright or inverted, larger or smaller.
Concave mirror
A mirror in which the reflecting surface is curved inwards and its center is further from the viewer than edges.
Convex mirror
A curved mirror where the reflective surface bulges out toward the light source.
Concave mirrors and convex lenses
Mostly making real images, except when the object is inside the focus.
Convex mirros and concave lenses
Always making virtual images.
are not
Mechanics __ always correct.
n = C / v
When a ray of light is traveling from a medium into another medium.
Note
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