Geometry

This module is concerned with some geometric results and identities used in physics, such as vector and scalar products, vector projection, and vector area.

Contents:

• Cross product is proportional to sine of angle between vectors
  • cross_product_length
  • first_vector_length
  • second_vector_length
  • angle_between_vectors
  • law
• Dot product is proportional to cosine of angle between vectors (vector)
  • first_vector
  • second_vector
  • angle_between_vectors
  • law
• Dot product is proportional to cosine of angle between vectors
  • dot_product
  • first_vector_length
  • second_vector_length
  • angle_between_vectors
  • law
• Scalar projection is vector length times cosine of angle
  • angle
  • vector_length
  • projection
  • law
• Vector area is unit normal times scalar area
  • vector_area
  • unit_normal
  • scalar_area
  • law