title: List of scientific demonstrations
text: # List of scientific demonstrations
  
  This is a list of scientific demonstrations used in educational demonstrations and popular science lectures.
  
  ## Physics
  
  * Balsa wood bridge — demonstrates compressive strength and tensile strength, teaches engineering thinking
  * Egg drop competition — demonstrates compressive strength, teaches engineering thinking
  * Hand boiler — demonstrates vapour-liquid equilibrium and simple heat engine principles
  * Newton's cradle — demonstrates elastic collision, conservation of momentum, and conservation of energy
  * Plate trick or Dirac belt trick — demonstrates spinors and the double cover of SO(3) by SU(2)
  * Prince Rupert's Drop — demonstrates supercooling and tensile stress
  * Self-siphoning beads — demonstrates momentum, energy and inertia
  * Water rocket — demonstrates conservation of momentum, conservation of energy, the gas laws and basic rocketry
  * Franklin bells — demonstrate electric charges
  * Oxford Electric Bell — an experimental electric bell that was set up in 1840 and which has run nearly continuously ever since
  * Wimshurst machine — an electrostatic generator
  * Shooting a candle through a plank
  * Foucault pendulum — demonstrates the rotation of Earth
  
  ## Chemistry
  
  * Ammonia fountain — introduces concepts like solubility and the gas laws at entry level.
  * Barking dog reaction — demonstrates rapid exothermic chemical reaction
  * Blue bottle (chemical reaction) — demonstrates reduction and oxidation reactions, and chemical colour change
  * Chemical garden
  * Diet Coke and Mentos eruption — demonstrates bubble nucleation
  * Dry ice color show
  * Elephant toothpaste
  * Fizz keeper
  * Flame test
  * Magic sand — demonstrates hydrophobic substances
  * Mercury beating heart — demonstrates electrochemical redox reaction. and an effect of a non-homogeneous electrical double layer
  * Screaming jelly babies — demonstrates the energy within candy
  * Using liquid nitrogen to shatter a rose
  * Detonating a cloud of flour
  