Laser Hair Removal Exam Questions & Answers(GRADED A)
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Course
Laser Hair Removal
Institution
Laser Hair Removal
what are the four characteristics of a wave? -ANSWER_ wavelength, frequency, velocity, amplitude
wavelength -ANSWER_ distance between 2 peaks of the wave measured in nanometers
frequency -ANSWER_ number of wave cycles per second; measured in hertz
velocity -ANSWER_ speed of light
amplit...
Laser Hair Removal Exam Questions & Answers(GRADED A)
what does the word LASER stand for? -ANSWER_ light amplification stimulated emission of radiation
what are the four characteristics of a wave? -ANSWER_ wavelength, frequency, velocity, amplitude
wavelength -ANSWER_ distance between 2 peaks of the wave measured in nanometers
frequency -ANSWER_ number of wave cycles per second; measured in hertz
velocity -ANSWER_ speed of light
amplitude -ANSWER_ height of the wave
what is the common standard of measure used for a wavelength? -ANSWER_ nanometers
explain the correlation between the wavelength, energy, frequency, amplitude, and penetration to the surface -ANSWER_ -shorter waves have more energy, higher frequency, higher amplitudes, less penetration -long waves have less energy, less frequency, less amplitudes, more penetration
what is the range for visible light? (nm) -ANSWER_ 400-780nm
what are actinic rays? -ANSWER_ damaging rays that come from the sun
what wavelengths are considered to be actinic? -ANSWER_ 0-400nm
what wavelengths for IR light? -ANSWER_ 780-10,000
what is spontaneous emission? -ANSWER_ process of energy absorption by electrons and emitting spontaneously
what are the components of laser? -ANSWER_ active medium, excitation mechanism, feedback mirrors, laser output
what are 3 unique characteristics of the laser light? -ANSWER_ 1) monochromatic 2) coherant 3) collimated coherence -ANSWER_ wave patterns are locked in one phase (up and down together)
collimation -ANSWER_ laser that creates a light beam that stays together as a tight beam of light over long distance without diverging
monochromaticity -ANSWER_ -one wavelength/color, -same wavelength number, color
who were 3 people developing the theory of LASER? -ANSWER_ -albert einstein -charlers townes -arthur shawlow
who invented the first laser and when? -ANSWER_ -theodore maiman -1960
in the visible spectrum, what is the color? -ANSWER_ wavelength
give the order of colors in the visible spectrum -ANSWER_ violet, indigo, blue, green,
yellow, orange, red
what is active medium of a laser? -ANSWER_ substance that creates the laser light
what types of active medium are commonly used? -ANSWER_ solid, liquid, gas, electronic
what is the energy source of a LASER? -ANSWER_ stimulates active medium
types of the energy sources used in different lasers -ANSWER_ direct current, radio frequency, optical (flashlight), other lasers
what conditions do we use lasers in esthetics for? -ANSWER_ -hair reducation
-hyperpigmentation -skin rejuvenation -spider veins
-stretch marks
-telangiectasia -capillaries -melasma -tattoo removal -acne -laser lipo
what is the definition of chromophore? -ANSWER_ substance that absorbs the laser light
what chromophore do we target in hair reduction? -ANSWER_ melanin
what chromophore do we target in capillaries? -ANSWER_ oxyhemoglobin
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