A list of common insulators

Physics question

You don't say what the insulators are insulating from ... heat or electricity.

Here are some of each:

Heat insulators:

- - Air (between the inner and outer bottles of a thermos bottle)

- - Wood (around the handle of a frying pan)

- - Cloth (an oven mitt)

Electrical insulators:

- - rubber

- - plastic

- - wood

- - cloth

- - air