The Clinical Application of Heat 69 



heat dosage ; its effects cannot be detected with a glass-enclosed 

 instrument, but, if it is neglected, serious overdosage and injury 

 to the patient may ensue. 



10 



20 



«o 



FIG. 3A. Isophotes (curves of equal radiation flux) from a bright-emitter treat- 

 ment lamp of 1000 watts determined with the thermoradiometer (receiver plate normal 

 to the axis of the lamp). 



