====== BRAINBOX - YOUNG ELECTRICAL ENGINEER IDEAS & ACTIVITIES ======
Have you ever wondered about [[:learn:sound:learn:home| how waves work]], and what the difference is between how a sound wave and a light wave travel?

----

===  Discover Positive & Negative Charge: ===
The [[http://en.wikipedia.org/wiki/Triboelectric_effect|Triboelectric Effect]] provides a number of safe, quick and easy easy experiments to help students understand electrical 'charge'.

The polarity and strength of the charges produced differ according to the materials, surface roughness, temperature, strain, and other properties.

The triboelectric effect is not very predictable, and only broad generalizations can be made

** Triboelectric Series Data **
A [[https://www.trifield.com/content/tribo-electric-series/|detailed table of Triboelectric series data]]

Also, useful information [[http://esdsystems.com/whitepapers/wp_tribocharging.html|here]]:

----

{{:brainbox:young-engineers:electricity:triboelectric_series.gif|Triboelectric Series Table}}

----

{{ youtube>ey88EdZo9hU?640x360 |Tribolectric effect}}
=== Video - Tribolectric effect ===
  * IF UNABLE TO ACCESS YOUTUBE VIDEO (requires Flash) TRY:[[http://viewpure.com/ey88EdZo9hU|Tribolectric effect]]

{{ youtube>HupFY_24o-4?640x360 |DIY Electroscope}}
=== Video: Build a DIY Electroscope ===
  * IF UNABLE TO ACCESS YOUTUBE VIDEO (requires Flash) TRY:[[http://viewpure.com/HupFY_24o-4|DIY Electroscope]]

{{ youtube>aySWX55-xX4?640x360 |Bubbles and positive/negative charge}}
=== Video: Bubbles and positive/negative charge ===
  * IF UNABLE TO ACCESS YOUTUBE VIDEO (requires Flash) TRY:[[http://viewpure.com/aySWX55-xX4|Bubbles and positive/negative charge]]

=== Interactives ===
To explain the cause of the interaction between a charged object (either positively or negatively charged) and a neutral aluminum drink can:
  * [[http://www.physicsclassroom.com/PhysicsClassroom/media/interactive/PopCanPolarization/index.html|Simulation: Polarisation of Aluminium + Rubber + Glass]]
  *[[http://www.physicsclassroom.com/PhysicsClassroom/media/interactive/CoulombsLaw/index.html|Interactive: Coulombs Law]]
  * [[http://www.physicsclassroom.com/PhysicsClassroom/media/interactive/Electric%20Field%20Hockey/index.html|Interactive Game - Push a charged puck using electrical charge]]