Last week we got started looking at electrochromic glass. Put more simply, this is glass that is designed to change its opacity in relation to the amount of current run through it. This is technology is responsible for what we know as “smart glass.” This kind of glass has a variety of uses ranging from dynamic privacy glass, to ultra violet light protection and scalable light control for sunny rooms. There are a lot of very interesting examples of this kind of glass in action, so go ahead and check some of them out. You won’t be disappointed… unless you’re easily disappointed, in which case, you might be disappointed. Moving on from this interesting field of glassmaking, our next glossary term has something in common with the last term. The commonality lies in the name, electromagnetic spectrum. This term is important in the window manufacturing industry because it deals with radiant heat, something every window manufacturer should be concerned with. This spectrum describes the wide variety of radiant energy that we experience in our daily lives. Now, we don’t experience all the different types of electromagnetic energy that exists within the spectrum, but we certainly do experience some. We are going to keep moving right ahead with our list and check out the next item of intrigue….  emergency exit windows. There is a lot to be said about this one, so we’ll try to squeeze as much in as we can. Emergency exit windows, also known as fire escape windows are required in every bedroom. There are specific building codes that determine the size and accessibility of each window, but in general, they must be at least large enough for an adult to crawl through. These windows are also called egress windows and are a crucial element in every home design.