M1 Flashcards
the study of radiant energy and matter to determine their interaction
SPECTROSCOPY
- a system of color bands
- continuum of color formed when a beam of light is dispersed so that its component wavelengths are arranged in order
spectra (spectrum)
TYPES OF SPECTROSCOPY
the entire frequency range of electromagnetic waves that includes the cosmic rays, gamma rays, xrays, ultraviolet rays, visible rays, infrared rays, microwaves, radar and radiowaves
ELECTROMAGNETIC SPECTRUM
TYPES OF SPECTROSCOPY
- also known as the visible spectrum
- it refers to the distribution of colors produced when light is dispersed by a prism, it includes the colors of rainbow
COLOR SPECTRUM
can be described as both waves and particles called photons and consist of regular electric and magnetic fluctuations
ELECTROMAGNETIC RADIATION
electromagentic radiation can be described as both waves and particles called
photons
electromagnetic radiation consist of regular ____ and ____ fluctuations
electric and magnetic
describes how many wave patterns or cycles pass by in a period of time
frequency
- distance between any two points with the same phase, such as between crests, or troughts (expressed in im, cm, or nm)
- length of a complete wave or cycle from the peak of one wave to the peak of the next
wavelength
another term for wavelength
lambda
relationship of wavelength and frequency
INVERSELY related
speed of light constant (c)
3.0 x 10⁸ m/s
- it refers to the number of waves per cm
- reciprocal of wavelength
- number of wavelengths in a given distance (expressed as m⁻¹, cm⁻¹, nm⁻¹)
wavenumber
it is a functional group which absorbs radiant energy in the UV and visible regions of the spectrum
chromophore
THEORIES OF RADIANT ENERGY
states that radiant energy occurs in bundles called “photon” or “quanta”
first theory
THEORIES OF RADIANT ENERGY
first theory states that radiant energy occurs in bundles called ____ or ____
photon or quanta
THEORIES OF RADIANT ENERGY
E = hv
first theory
THEORIES OF RADIANT ENERGY
states that energy in the electromagentic spectrum is propagated in wave form
second theory
THEORIES OF RADIANT ENERGY
c = ʎv
second theory
THEORIES OF RADIANT ENERGY
relationship of radiation and frequency
DIRECTLY proportional
planck’s constant (h)
6.62 x 10⁻²⁷ erg*s
most important electromagnetic wave
vvisible rays
relationship of wavelength and energy
INVERSELY proportional
FORMULA
E =
given = frequency
E = h x v
FORMULA
E =
given = wavelength
E = h x c/ʎ
FORMULA
E =
given = wavenumber
E = h x c x ν
FORMULA
wavelength ʎ =
givem = frequency
ʎ = c/v
FORMULA
frequency v =
given = wavelength ʎ
c/ʎ
