Names in Matter and Light

said the atom was the smallest part of matter

said that matter was continuous but made of four elements: fire, water, air, and earth

created the wave model of light; responsible for Huygens's principle

theory that light travels (need to know the visual model)

developed the particle model of light (Everyone believed Newton?)

an explanation of a broad base of scientifically verified facts

a disturbance that transfers energy from one place to another in a medium

frequency

how many times per second

did the double slit experiment; discovered light was a wave by looking at an interference pattern.

when two waves intersect or pass over one another. There is a picture.

came up with the Atomic Model of Matter

1. All matter is made up of atoms.
2. Atoms are indivisible and therefore the smallest piece of a particle.
3. Elements all have different atoms, but all atoms of a type (oxygen, e.g.) are the same.
4. Atoms can combine together chemically to form compounds.

developed the periodic table of elements; helped to predict the existence of previously unknown elements

63 elements arranged by atomic mass and chemical properties

unified electricity and magnetism in four equations (there is a lot more here. See packet.)

discovered electron; modified the model of the atom to the plum pudding model

like a watermelon, positive matter spread out, electrons as small particles, represented by the plums or seeds (see diagram)

only woman in group; discovered radio activity; died from radiation poisoning; found that some elements were naturally going to decay

came up with E=hf where E= energy, h = Planck's constant, and f= frequency; solved black-body radiation problem; thought light

Discovered the Nucleus.
All positive matter is concentrated towards the center (Diagram)

Electrons orbit at specific distances. Created Bhor model.
Light is a particle, light is a wave: Principle of Complementarity.

electron changing position from one radius to another

electrons are oscillating, standing waves which have specific energy levels why light is only emitted at frequences which correspond to the electron

Schrodinger's wave equation. describes matter as waves

Uncertainty principle. The more you try to measure the mom momentum, the less you know about the distance and vice versa. ΔxΔp≥h/2, where h is Planck's constant.

Discovers neutron, same mass as proton, neutral change.