conductors
mugs,foam cups and plastic cups
Expanded polystyrene (packing foam) is generally considered a good heat insulator. Aerogel is considered to be one of the best insultators: You can place a Bunsen burner flame on one side of a thin slice of aerogel and your hand on the other side and not get burned.
In a foam there is a large gap between the conduction band and the valence of band in the atoms makng up the foam. If any object is to conduct electricity through it the gap between the conduction band amd the valance should be minimun or overlapping so that the electrons in the valance band can go into conduction band and conduct electricity
vacuum, styrofoam, plastic, wood, glass, rubber
There are different kind of packaging types and material available in the market. But the main thing to be considered is what kind of product is that which you want to pack. There are metal, brick carton, and glass, plastic, cardboard and corrugated packaging materials available in the market. The most important element is to know what suitable material for your concerned product is. Like plastic bottle packaging is good for liquid stuff.
paper or foam cups
paper or foam cups
There are many good quality materials for a toy sword. Examples of good quality materials for a toy sword include the materials of plastic and thick foam.
Refrigerators and freezers have plastic foam core as it is the most resistant to the low temp inside the compartment,but even Teflon can be used
yes you can test it under a lamp and see the temp. for the foam and paper and if one has the lowest than that's the better insulator!good luck!
Plastic foam containing pockets of air is a good insulator. The air pockets hinder the transfer of heat or electricity, making it difficult for these forms of energy to pass through the material. This makes plastic foam with air pockets an effective insulator for keeping things warm or preventing electrical conduction.
mugs,foam cups and plastic cups
Construction paper is not a good insulator because it is thin and composed of loosely packed fibers, allowing heat to easily pass through. Insulators need to have a low thermal conductivity to effectively block the flow of heat, which construction paper does not have. Materials like foam, fiberglass, and plastic are better insulators due to their structure and composition.
plastic feels soft and smooth =]
Expanded polystyrene (packing foam) is generally considered a good heat insulator. Aerogel is considered to be one of the best insultators: You can place a Bunsen burner flame on one side of a thin slice of aerogel and your hand on the other side and not get burned.
styrofoam ,bubble wrap ,polyurethane foam, fleece ,aluminiaum.
Examples of good insulators include rubber, glass, wood, plastic, and ceramic materials. These materials have high resistance to the flow of electricity or heat, making them effective at blocking the transfer of energy.