Refraction Index Calculation

The light beam propagates from the first medium with the refractive index n₁ into the second medium with the refractive index n₂.
The angles of incidence and refraction are θ₁ and θ₂ respectively.

The following data are known:
θ₁ = °.
n₂ =
θ₂ = °.
Find unknown n₁.
Enter your answer using 3 significant figures.

n₁ = ?

n₁ sin θ₁ = n₂ sin θ₂
n₁ = n₂ sin θ₂ / sin θ₁

Refraction Calculation: θ1 = ?

n₁ =
n₂ =
θ₂ = °.
θ₁ = ?°

n₁ sin θ₁ = n₂ sin θ₂
sin θ₁ = n₂/n₁ sin θ₂
θ₁ = arcsin( n₂/n₁ sin θ₂ )

Refraction Calculation: θ2 = ?

n₁ =
n₂ =
θ₁ = °.
θ₂ = ?°

n₁ sin θ₁ = n₂ sin θ₂
sin θ₂ = n₁/n₂ sin θ₁
θ₂ = arcsin( n₁/n₂ sin θ₁ )

At what angle?

 35. A narrow beam of white light enters a prism made of crown glass at a θ º incident angle, as shown in Figure. At what angle, θ_R, do the red (660 nm) components of the light emerge from the prism? 

Enter your answer in degrees using 3 significant figures. 

Calculator of the intensity of electromagnetic waves carrying the power P through the rectangular area a x b.

Calculator:
Calculator of the intensity of electromagnetic waves carrying the power P through the rectangular area a x b.
Equation: I=P/(ab)

P = W µW mW kW MW GW TW PW EW ZW YW
a = m pm nm µm mm cm km Thousand km Million km
b = m pm nm µm mm cm km Thousand km Million km
0.0796 W/m² fW/m² pW/m² nW/m² µW/m² mW/m² kW/m² MW/m² GW/m² TW/m²
Maximum electric field strength E₀ = (2⋅I⋅ c⁻¹ ⋅ ε₀⁻¹)^½ = 7.74 V/m fV/m pV/m nV/m µV/m mV/m kV/m MV/m GV/m TV/m
Maximum magnetic field strength B₀ = E₀ / c = 9.16e-8 T fT pT nT µT mT kT MT GT TT
The speed of light c = 299792458 m/s
Vacuum Permittivity ε₀ = 8.8541878128 × 10⁻¹² F⋅m⁻¹

₀₁₂₃₄₅₆₇₈₉₊₋₌₍₎ₐₑₒₓₔₕₖₗₘₙₚₛₜ⁻ⁱ⁻⁰⁻¹⁻²⁻³⁻⁴⁻⁵⁻⁶⁻⁷⁻⁸⁻⁹⁺⁻ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψωc = 299792458 m/s

Frequency-Wavelength-Period Calculator for Electromagnetic Waves in Vacuum

f = c/λ = Hz µHz mHz kHz MHz GHz THz PHz EHz ZHz YHz
λ = c/f = m pm nm µm mm cm km Thousand km Million km
T = 1/f = s fs ps ns µs ms min hour years thousand years
c = 299792458 m/s

⁻ⁱ⁻⁰⁻¹⁻²⁻³⁻⁴⁻⁵⁻⁶⁻⁷⁻⁸⁻⁹⁺⁻

Problem 3

 Problem 3

Three identical point charges of 1 C each are located at the vertices of an equilateral triangle, and this system has a potential energy of 1 J. (There is no in our consideration of other charges or external fields)

What would be the potential energy with the same arrangement of point charges, if the charges had different values, for example, the following: -1 C, 2 C, and 3 C?