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LC Physics

All Physics Definitions for Leaving Certificate - Higher Level

Light

  • Refraction is the bending of light as it goes from one medium to another.
  • Laws of Refraction: (1) Incident ray, refracted ray & normal are on the same plane. (2) Sine I/Sine R is constant.
  • Refractive Index: Sine I/Sine R = 1/Sin C = Real depth/Apparent depth = c1/c2
  • Critical Angle: The angle whose angle of incidence is 90 when light goes from a denser to a rarer medium.
  • Total Internal Reflection: When light travelling from a denser to a rarer medium strikes the second medium with an angle of incidence greater than the critical angle, it is reflected... (More)

Macbeth is responsible for his own downfall – Essay

Macbeth, despite influences of the witches and Lady Macbeth, is responsible for his downfall. In Shakespeare’s play Macbeth, Macbeth is a tragic hero who destroys himself by his own wicked and selfish ambitions. At the beginning of the play, Macbeth is portrayed as a courageous, noble hero of Scotland who has bravely won the war. As the story continues, Macbeth soon becomes a tyrant king who is willing to murder anyone who becomes a threat to his kingdom.

As the play begins, Macbeth proves himself to be a hero as he demonstrates his bravery and courage. He is praised... (More)