30255
With a few exceptions related to high-energy photons ( such as fluorescence , harmonic generation , photochemical reactions , the photovoltaic effect for ionizing radiations at far ultraviolet , X-ray and gamma radiation ) , absorbed electromagnetic radiation simply deposits its energy by heating the material .
 X-ray
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 X-ray