Examples of Physics Notation with physPad

The following examples illustrate entry of some common expressions.

Expression

Do this

To display this

An expression with numbers and subscripted variables

  1. Type 1/2 and press the RIGHT ARROW key
  2. Type m_2 and press the RIGHT ARROW key
  3. Type +4m_3 

1 2 m 2 + 4 m 3

A square root

Type sqrt(gh 

g h

A cube root

  1. Click Math > nth root button 
  2. Type 3 and press the RIGHT ARROW key
  3. Type m_1 and press the RIGHT ARROW key
  4. Type m_2 and press the RIGHT ARROW key
  5. Type m_3 and press the RIGHT ARROW key

m 1 m 2 m 3 3

An expression involving Euler's number

  1. Click Math > Euler's number button 
  2. Type 2 

e 2

An expression involving hbar (ħ)

  1. Type 3 
  2. Click Symbols > h-bar button 
  3. Type ^2 

3 ħ 2

A vector in hatted i-j-k form

  1. Type 5 
  2. Click Vectors > hat button 
  3. Type i and press the RIGHT ARROW key
  4. Type +24 
  5. Click Vectors > hat button 
  6. Type j and press the RIGHT ARROW key
  7. Type +4 
  8. Click Vectors > hat button 
  9. Type k 

5 ı ^ + 24 ȷ ^ + 4 k ^

A vector in bold i-j-k form

  1. Type 5 
  2. Click Vectors > i vector button 
  3. Type +24 
  4. Click Vectors > j vector button 
  5. Type +4 
  6. Click Vectors > k vector button 

5 i + 24 j + 4 k

A vector in vector bracket form

  1. Click Vectors > angle bracket button 
  2. Type 12, 15, 22 

12 15 22