Important People, Experiment, and Theories in Science

Important People, Experiment, and Theories in Chemistry 

Louis de Broglie

All matter has both particle and wave characteristics

- de Broglie equation

  where, Momentum(p) p = m*v
           Planck constant 

Albert Einstein

Photoelectric effect : means the emission of electrons or other free carriers when electromagnetic radiation, like light, hits a material

Heisenberg Uncertainty

- Uncertainty principle : Generally, the position or momentum of an atom is not known accurately.

- We express electron orbitals by probability.

James Maxwell

- Expressed the general behavior of light mathematically.

- Described how much energy is represented in electric and magnetic fields in the form of radiation.

Robert Millikan

- Calculated the charge of an electron

- Electron charge(-e) = -1.602 * 10^-19 coulomb

Max Planck

- The 'father' of quantum mechanics

- Energy is absorbed or released from atoms in a quantum form.

Amplitude (A)

- The vertical distance from the midline of a wave to the peak or through

- The three elements of a wave 

  Amplitude(A), Wavelength(λ), and Period(T)

Rydberg constant 

= 2.18*10^-18 

ΔE = h*v = [1/ni^2 - 1/nf^2]

Formula

Velocity(v)

- The speed of a wave. Common units are cm*sec^-1

- v =   * v

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