3.5.8

Brownian Motion

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Brownian Motion

Gas particles move randomly. This is called Brownian Motion.

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Brownian motion

  • Brownian motion is named after Robert Brown, who was a British botanist (someone who studies plants).
  • In 1827, he investigated the effects of pollen in water.
  • He noticed it moves around randomly.
  • Brownian motion describes the random movement of particles suspended in a liquid or gas.
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Brownian motion in fluids

  • Liquids and gases can be described as fluids.
  • The random motion of particles occurs because of the collisions with other particles.
  • After the collisions, the particles change direction.

Jump to other topics

1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Thinking Scientifically

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