Microwave Irradiation

nbsp;    (1)      (2); ; (3)

 p;(1) Microwave&sp;(2) Ultraviolet; UVA/UVB ( tanning ) UVC ( Germicidal ) (3) Gamma

Tests Conducted:

Six Cup Plates (Lee/Rose 56, 391, 402, 476, 526 and 675A) were subjected to microwave radiation for periods ranging from 45 minutes to 5 hours 10 minutes. These plates were reputedly manufactured in the Eastern United States, in the Pittsburgh/Wheeling area and in the Midwest. Thus they presumably had differing chemical compositions.

Test Results :

No change was found in the color of the Cup Plates after they had been subjected to intense microwave radiation.

Comments:

To make a general comment, it would seem unlikely that microwave irradiation would change the color of glass.

A study of the literature indicates that glass containing certain chemical impurities can be colored by irradiation, but only by application of radiation at the high end of the electromagnetic spectrum - specifically in the Ultraviolet and Gamma ranges.

It is perhaps pertinent to note that glass tubes used to produce microwave frequencies in specalized radio transmitters do not change color, even after years of useage at very high power levels.

Also, heating glass - which involves infrared irradiation at a far higher frequency than microwaves has not been shown to color glass.

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