code: def physical(self):
          
  
          if not self.raw or self.conversion is None:
              samples = self.samples.copy()
          else:
              samples = self.conversion.convert(self.samples)
  
          return Signal(
              samples,
              self.timestamps.copy(),
              unit=self.unit,
              name=self.name,
              conversion=self.conversion,
              raw=False,
              master_metadata=self.master_metadata,
              display_name=self.display_name,
              attachment=self.attachment,
              stream_sync=self.stream_sync,
              invalidation_bits=self.invalidation_bits,
              source=self.source,
              encoding=self.encoding,
          )
docs: get the physical samples values
  
          Returns
          -------
          phys : Signal
              new *Signal* with physical values