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Light Bohr Quantum Mechanics

### Amplitude

distance from the baseline to the crest (depends on the intensity or brightness of the light)

### Electromagnetic Radiation

-composed of electric and magnetic field traveling together

-the strengths of the electric and magnetic fields are constantly changing

-wavelength of light waves

### Speed of Light (If Consistent)

Wavelength and Frequency are Inversely Related

-the longer the wavelength, the lower the frequency

-the shorter the wavelength, the higher the frequency

### Visible Spectrum

Infrared, ROYGBIV, Ultraviolet

Longer Wavelength→Shorter Wavelength

Lower Frequency→Higher Frequency

### Wave Characteristics

Diffraction and Interference... light undergoes diffraction and interference... therefore light has as wave nature

### Diffraction

the bending of waves through a small opening; a straight beam of parallel waves emerges as a rounded pattern that spreads out

### Interference

an effect that results when two series of waves merge into each other: constructive and destructive

### Planck's Equation for Energy Contained in a Photon

e=hν

-energy in a photon is proportional to the frequency

### Bohr's Model of the Atom

-adds energy levels for electrons

-his model perfectly explains all the lines in his atomic spectra

### De Broglie Differs from Bohr's

De Broglie→ light as a wavelength

Bohr→ thought of the electron just as a particle

### Davisson and Germer

shoot a beam of electrons through a crystal and obtain a diffraction pattern

-verified light as a wavelength

### Quantum Mechanics vs. Newtonian Mechanics

quantum mechanics: very small objects, near speed of light

newtonian mechanic: regular sized objects, normal speeds

### Schrödinger

derived a wave equation which allows us to calculate the probability of finding an electron