(LM8) Electromagnetic Radiation

more nm means longer wavelength ^

if meters exponents more on the positive side it means longer wavelength ^

less hz means longer wavelength^

• Wavelength

  • The wavelength is the distance between two consecutive peaks or troughs in a wave

  • lambda;λ

• Frequency

  • nu; ν

• Speed of light

  • constant; c

  • 3 × 10^8 m/s

• According to the formula for energy E= (hc)/lambda, since both h and c are constants, increasing the wavelength will cause a decrease in the energy, which will directly cause a decrease in the kinetic energy of the electrons and in their speed.

• If you are given energy and must solve for wavelength, do this:
  

  

• to convert, must look like this for either frequency or wavelength:
  

  

  
  

• ∆E is the change in energy

• ℎ is the Planck’s constant

  • 6.6 × 10^-34 Js

For wavelengths ^