What is the best insulation?

is this insulation thingy a good science project?  :D

ever tried a space blanket?

Nice video. What would have been really impressive is if one of the foam cups was wrapped with the aluminum foil. Combining radiant barrier to stop radiant heat (by emissivity in this case) and foam insulation to slow conductive heat results in a high-performance thermal envelope similar to what we are doing in super efficient construction.

Also.. Newspaper and paper towels, even untreated wood absorb moisture (also due to their capillary nature), so the thermally conductive moisture they picked up would replace the dead air, eliminating most of the insulating quality of the material.

Aluminum conducts more heat than plastic or wood, but it also reflects more thermal radiation. In other words, aluminum insulates over a distance, wood and plastic insulate better when they have 'dead air' (motionless) trapped. For this reason, styrofoam and any wood would insulate better than metal if the materials were touching the water.
Most radiant barriers are reflective plastic and they don't provide a thermal break against anything they touch.

To insulate a house,

the best insulation would be a vacuum. It's not really practical with today's technology for houses.

That video is gross!

My last comment was referring to reminvestor.

aluminum foil just gets heavy and expensive thats why its not always used for insalation lol other then that... i heard newspapers a really good insalation... dude you are an idot to think that paper towel is the best insalation... eveyone knows that its not... lmao...

we shld all sleep covered in aluminum foil from now on... hehehe. Great video though!!