Returns the physical type of the argument.
        
        
            Arguments
        
        
            
                
                
                
                
                
                
                    
                        | Number | Type | Compulsory | Default | Description | 
                    
                        | 1 | real/complex array | Yes |  | Vector | 
                
            
        
        
            Argument 1
        
        
            Possible values are.
        
        
            - 
                " (meaning dimensionless quantity)
            
- 
                'unknown'
            
- 
                'Voltage'
            
- 
                'Current'
            
- 
                'Time'
            
- 
                'Frequency'
            
- 
                'Resistance'
            
- 
                'Conductance'
            
- 
                'Capacitance'
            
- 
                'Inductance'
            
- 
                'Energy'
            
- 
                'Power'
            
- 
                'Charge'
            
- 
                'Flux'
            
- 
                'Volt???MATH???^2???MATH???'
            
- 
                'Volt???MATH???^2???MATH???/Hz'
            
- 
                'Volt/rtHz'
            
- 
                'Amp???MATH???^2???MATH???'
            
- 
                'Amp???MATH???^2???MATH???/Hz'
            
- 
                'Amp/rtHz'
            
- 
                'Volts/sec'
            
        
        
            Returns
        
        
            Return type: string
        
        
        
        
            See Also