The difference in energy (in joules) between photons with these wavelengths is 4×10¯²² J
How to determine the energy with wavelength 589 nm
- Planck's constant (h) = 6.626×10¯³⁴ Js
- Speed of light (v) = 3×10⁸ m/s
- Wavelength (λ) = 589 nm = 589×10⁻⁹ m
- Energy (E₁) =?
E = hv / λ
E₁ = (6.626×10¯³⁴ × 3×10⁸) / 589×10⁻⁹
E₁ = 3.375×10¯¹⁹ J
How to determine the energy with wavelength 589.6 nm
- Planck's constant (h) = 6.626×10¯³⁴ Js
- Speed of light (v) = 3×10⁸ m/s
- Wavelength (λ) = 589.6 nm = 589.6×10⁻⁹ m
- Energy (E₂) =?
E = hv / λ
E₂ = (6.626×10¯³⁴ × 3×10⁸) / 589.6×10⁻⁹
E₂ = 3.371×10¯¹⁹ J
How to determine the difference in energy
- Energy with wavelength of 589 nm (E₁) = 3.375×10¯¹⁹ J
- Energy with wavelength of 589.6 nm (E₂) = 3.371×10¯¹⁹ J
- Difference =?
Difference = E₁ - E₂
Difference = 3.375×10¯¹⁹ - 3.371×10¯¹⁹
Difference = 4×10¯²² J
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