> I immediately notice the difference in my mood walking into a modern office where the walls are essentially giant glass windows […] What's the R-value [1] /

> I immediately notice the difference in my mood walking into a modern office where the walls are essentially giant glass windows […] What's the R-value [1] / U-factor on all of those windows? In offices, even though a thermometer / thermostat reads 20C/70F in both summer and winter, people feel cold: the giant office windows work as "anti-radiators", where energy wants to move from your body/skin to them. * https://en.wikipedia.org/wiki/Mean_radiant_temperature https://en.wikipedia.org/wiki/Mean_radiant_temperature I also find the first thing that what many folks do is pull down the blinds on windows in offices so they can actually see their screens. :) [1] https://en.wikipedia.org/wiki/R-value_(insulation) https://en.wikipedia.org/wiki/R-value_(insulation)