Electromagnetic & Intense Pulsed Light (IPL) or Photothermolysis Equations

Electromagnetic & Intense Pulsed Light (IPL) or Photothermolysis Equations

Down below I have provided you with the equations necessary to solve to figure out the different frequencies and wavelengths of light and energy that we absorb through two target systems, melanin and blood.

E= hc/ Λ or λ
C= vλ
E= vh
J= SI base units kg⋅m2⋅s-²= N(m)= Pa(m³)= W(s)= C(V) CGS units 1×107 erg
kilowatt hours 2.78×10−7 kW⋅h kilocalories (thermochemical) 2.390×10−4 kcalth BTUs 9.48×10−4 BTU electronvolts 6.24×1018 eV
F= J/cm²
W= J/s
Wl and freq.: λ(cm²) x (s-¹)= c(cm/s)
T= d²/ka; a= k/pcp; a= 2 x 15³cm²/s
cm= 1100″, 1/100 or 0.01; SI unit= 10 metres, Λ, λ= 30
h, Planks Constant= 6.62607004 x 10^-34m² kg/s
v= frequency
Ultraviolet frequency= 6.8 x 10^15 1/s
Sunlight frequency= 126.22 Hz
Sunlight wavelength= (1) visible light, with wavelengths between 0.4 and 0.8 micrometre, (2) ultraviolet light, with wavelengths shorter than 0.4 micrometre, and (3) infrared radiation, with wavelengths longer than 0.8 micrometre.
Natural harmonic rhythmic frequency, F-sharp= 1.655 x 1043 Hz


As wavelength increases, energy decreases
As frequency increases, so does the energy
Speed of Light: c= 3.00 x 10^10 cm/s
1= 10mm= cm= 0.01 metres, 2.54 cm= 1in
Energy of photon: constant x speed of light ÷, / (divided by) wavelength: E= hc/ Λ or λ
C= vλ
E= vh
Amount of Energy (Fluence: a stream of particles crossing a unit area, usually expressed as the number of particles per second via biflouescence; fluo·res·cence- the visible or invisible radiation emitted by certain substances as a result of incident radiation of a shorter wavelength such as X-rays or ultraviolet light.- the property of absorbing light of short wavelength and emitting light of longer wavelength.) measured in Joules per unit measured in cm²: F= J/cm²
Power measured represent amount of energy (Watts) delivered over period of time: W= J/s
Wavelength and frequency: λ(cm²) x (s-¹)= c(cm/s)
Thermal Relaxation Time (TRT): Time= size doubled divided by geometric factor (cylinder= 16) by thermal diffusion/ absorption (2 x 15³cm²/s); T= d²/ka