The Mazda lamp has an efficiency of about 1.25 and is the most efficient of all.
At the same time the percentage of tungsten (Mazda) lamps increased from virtually zero in 1907 to about 87 per cent.
The carbon lamp can be distinguished from Mazda lamps (Fig. 45) by the appearance of the filament.
Listen to this with kindly spirit, Mazda; incline thine ear, Ahura.
We praise Mazda's religion, and the pure brotherhood which it established.
