LASER AND LIGHT-BASED HAIR
REMOVAL PHYSICS WITH COMPLETE
SOLUTIONS
What are the three characteristics of LASER light? - ANSWER-Monochromatic,
collimated, coherent
Is LASER light considered to be polychromatic? - ANSWER-No
Light that has one wavelength or one color is called what? - ANSWER-Monochromatic
Light waves that are all in phase and unison with each other and traveling in the same
directions is called what kind of light? - ANSWER-Coherent
Light waves that all run parallel to each other is called what kind of light? - ANSWER-
Collimated
Light that has multiple wavelengths or colors that create a broad spectrum of light is
called what kind of light? - ANSWER-Polychromatic
What type of melanin is responsible for brown /black pigment? - ANSWER-Eumelanin
What type of melanin is responsible for blonde/red-pink pigment? - ANSWER-
Pheomelanin
What are the two types of melanin? - ANSWER-eumelanin and pheomelanin
What do you call the use of laser energy to selectively destroy a target beneath the
skin? - ANSWER-Photo-thermolysis
Between spot sizes 5 mm and 18 mm, which one will have the deepest penetration? -
ANSWER-18 mm
Larger spot sizes have______penetration compared to smaller spot sizes. - ANSWER-
Deeper/more
What is the target chromophore for laser hair removal? - ANSWER-Melanin
What are the three stages, in correct order, that an electron will go through to produce a
photon? - ANSWER-Ground, singlet, metastable
REMOVAL PHYSICS WITH COMPLETE
SOLUTIONS
What are the three characteristics of LASER light? - ANSWER-Monochromatic,
collimated, coherent
Is LASER light considered to be polychromatic? - ANSWER-No
Light that has one wavelength or one color is called what? - ANSWER-Monochromatic
Light waves that are all in phase and unison with each other and traveling in the same
directions is called what kind of light? - ANSWER-Coherent
Light waves that all run parallel to each other is called what kind of light? - ANSWER-
Collimated
Light that has multiple wavelengths or colors that create a broad spectrum of light is
called what kind of light? - ANSWER-Polychromatic
What type of melanin is responsible for brown /black pigment? - ANSWER-Eumelanin
What type of melanin is responsible for blonde/red-pink pigment? - ANSWER-
Pheomelanin
What are the two types of melanin? - ANSWER-eumelanin and pheomelanin
What do you call the use of laser energy to selectively destroy a target beneath the
skin? - ANSWER-Photo-thermolysis
Between spot sizes 5 mm and 18 mm, which one will have the deepest penetration? -
ANSWER-18 mm
Larger spot sizes have______penetration compared to smaller spot sizes. - ANSWER-
Deeper/more
What is the target chromophore for laser hair removal? - ANSWER-Melanin
What are the three stages, in correct order, that an electron will go through to produce a
photon? - ANSWER-Ground, singlet, metastable
