Helpmyphysics

James Dewar was a Scottish scientist born in 1842. He built a machine to change oxygen gas into liquid oxygen.
As result of this work he invented a special flask to keep liquids cool.
This was the Dewar flask.
You can read about the Dewar Flask here
Find out about James Dewar here

Some questions:

1. Describe a part of the flask that stops heat loss through conduction.
2. Why is the inside of the flask made of a silver type of material?