Quote:
Originally Posted by Mr. Smiley
If there was only a 20% difference between boro and soda lime levels, that is certainly interesting. It leaves me really wanting to know the scale of what they were testing. It is in line with what I've been thinking the difference between soft glass and boro should be. I don't think the divide is as great as previously reported when it comes to IR levels.
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According to Mike, the reason for the difference is in the meat of the document, where they compared scientific glassblowing to furnace glassblowing. The soda-lime numbers compared to the pyrex numbers tell the tale:
IR radiation soda-lime: 38.5 mW/cm2
IR radiation pyrex: 0.61 mW/cm2