BIOL 1030 Lecture Notes - Lecture 4: Electromagnetic Spectrum, Emission Spectrum, Atomic Number

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1030
• Professor: Kevin G.Scott

Document Summary

Eld and one for the magnetic eld (f. 1: light has wave aspects, wavelength ( ) is the distance between two successive crests (units: m / nm) The photoelectric effect: photoelectric e ect is the transfer of energy from light to the electron in order to break free of its attraction to the nucleus (the binding energy). The kinetic energy of the eject electrons increased linearly with the frequency of the light (kinetic energy is proportional to frequency) The number of emitted electrons increased with light intensity: all metals show the same pattern, but each metal has a di erent threshold frequency. The particles are called photons, which are packet of energy: electrons are ejected only if absorbed photons that have at least minimum amount of energy (threshold frequency, frequency vs. Intensity: electrons are only ejected if the frequency of light is high enough. It is not dependant on the intensity of the light.