Quote from: screenmachine on April 27, 2007, 01:44:34 PM
look up vacuum, heat cannot be passed through a vacuum which surrounds the inside of a flask. therefore no heat can escape from the flask or inserted to the flask from the outside due to a lack of air to carry the heat. if u look up vacuum and get anything about dyson just ignore...
Incorrect boyo. There are three types of heat transfer- conduction, convection and radiation. A vaccuum only eliminates heat transfer via the first two methods!