CHM 2045C Lecture Notes - Lecture 7: Quantum Mechanics, Pearson Education, Electromagnetic Spectrum
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Peak is the top of the wave and trough is the bottom of the wave. Node: where wave meets center or 0 (points where probability drops to 0). Phase: sign of amplitude of wave and determines how it interferes with another wave. Frequency(v) is the number of waves that pass a point in a given period of time (the number of waves = number of cycles). The units are hertz (hz) or cycles/s or s 1 (v=c/ ) Wavelength ( ), measured in m, is the distance between two peaks, troughs, or nodes (longer wavelengths= lower energy) =1/rh( Amplitude is the distance between the node and peak or trough (height) and measures how intense the light is. For energy of a mole of a wave, find e in joules and multiply by 6. 022x1023. Energy of wave: e=hv or e=hc/ (in m). The total energy is proportional to the amplitude of the waves and the wavelength.
