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  • Calculating Wavelength from Photon Energy: A Step-by-Step Guide
    Here's how to calculate the wavelength of a photon with twice the energy of a 580 nm photon:

    1. Calculate the energy of the 580 nm photon:

    * Use the equation: E = hc/λ

    * E = energy of the photon

    * h = Planck's constant (6.626 x 10^-34 Js)

    * c = speed of light (3 x 10^8 m/s)

    * λ = wavelength (convert 580 nm to meters: 580 x 10^-9 m)

    * Substitute the values: E = (6.626 x 10^-34 Js)(3 x 10^8 m/s) / (580 x 10^-9 m)

    * Calculate: E ≈ 3.43 x 10^-19 J

    2. Double the energy:

    * E' = 2 * E = 2 * (3.43 x 10^-19 J) = 6.86 x 10^-19 J

    3. Calculate the wavelength of the photon with double the energy:

    * Rearrange the equation from step 1 to solve for λ: λ = hc/E'

    * Substitute the values: λ = (6.626 x 10^-34 Js)(3 x 10^8 m/s) / (6.86 x 10^-19 J)

    * Calculate: λ ≈ 2.90 x 10^-7 m

    4. Convert the wavelength to nanometers:

    * λ ≈ 2.90 x 10^-7 m * (10^9 nm/m) = 290 nm

    Therefore, the wavelength of a photon with twice the energy of a 580 nm photon is approximately 290 nm.

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