Videophones and similar video technologies can be used for distance communication using sign language.

This model is now used by economists in various forms using different variables to demonstrate several other economic principles.

Kodachrome is generally used for direct projection using white light.

However the packaging used by super markets using sealed plastic bags under some pressure.

Since then the camp has been used by the scout groups using the site.

It is also used for material characterization using X-ray spectroscopy.

The photographs had been previously used in studies using subjects from Western cultures.

The airfield is not to be used by aircraft using jet engines.

This approach has the advantage that it can readily be used using existing technology.

It is often used in sandwich construction using the West(and other similar ) epoxy system.