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Electromagnetic spectrum
the range of different kinds of electromagnetic radiation

Electricmagnetic energy
is characterized by a frequency, a wavelength, and an amplitude

Frequency (ν "nu" )
the number of wave maxima that pass by a fixed point per unit time.

Hertz (Hz)
a unit of frequency; 1Hz = 1s^1

Wavelength (lambda)
the length of a wave from one maximum to the next (Section 3.1)

Amplitude
a wave's height measured from the midpoint between peak and trough

wavelength equation
 Wavelength * Frequency = Speed of light
 "lambda"(m) * "nu"(Hz) = c (m/s)
 rewritten
 "lambda" = c / "nu"
 or
 "nu" = c / "lambda"

Line spectrum
the wavelengths of light emitted by an energetically excited atom

Balmer–Rydberg equation
an equation that accounts for all lines in the hydrogen spectrum
1 / "lambda" == R(oo) ((1/m^2)  (1/n^2))
R(oo) = Rydberg constant == 1.097*10^2 nm^1

Photon
the smallest possible amount of radiant energy; a quantum

photon energy equation
E = h*"nu" == hc/"lambda"
 h = plack's constant: 6.626*10^34
 c = speed of light: 3.00*10^8

Avogadro's number
6.022*1023 unit of mole.

joule
 is a unit of energy
 1 j = 1(kg/m^{2})/s^{2}

the intensity of a light beam is a measure
of the number of photonsin the beam

a measure of energies of the photons
frequency

Quantum
the smallest possible amount of radiant energy

de Broglie equation
 an equation that relates mass, wavelength, and velocity, m = h/λν
 λ = h/mν
 m: mass
 h: placks constant

Quantum mechanical model
a model of atomic structure that concentrates on an electron's wavelike properties

Heisenberg uncertainty principle
 The position and the velocity of an electron can never both be known beyond a certain level of precision
 (change in x"position")(Change in Mass "nu") => h / 4"pie"

