Is glass a bad insulator

Answer 1

Glass is normally considered to be at best a fair thermal conductor. Good thermal conductors, like metals conduct heat at 1 or 2 orders of magnitude (10 to 100 times) the rate of glass:

Glass conducts at around 1 W/m∙K

Stainless steel conducts at about 20 W/m∙K

Carbon Steel conducts at about 50 W/m∙K

Brass conducts at about 109 W/m∙K

Aluminum conducts at about 250 W/m∙K

Gold conducts at about 310 W/m∙K

Copper conducts at about 400 W/m∙K

Silver conducts at about 429 W/m∙K

On the other hand, it isn't necessarily that great an insulator.

Concrete conducts at only about 0.42 W/m∙K

Teflon conducts at only about 0.25 W/m∙K

Hardwoods like oak and maple conduct at only about 0.16 W/m∙K

Cork conducts at only about 0.07 W/m∙K

Paper conducts at only about 0.05 W/m∙K

Fiberglass conducts at only about 0.04 W/m∙K

Polyurethane foam conducts at only about 0.02 W/m∙K

Argon gas (sometimes used to fill insulating windows) only conducts at about 0.016 W/m∙K

Answer 2

It isn't the worst insulator but it isn't the best either.

Answer 3

yes

Answer 4

yes it can

Answer 5

yes

Answer 6

no