•     An excellent conductor of electricity
•     Resistant to corrosion
•     Almost completely indestructible but very flexible
•     Non-toxic; and is not carcinogenic
•     The strongest reflector of heat

Because gold is an excellent conductor of electricity, it is used in:

• Computers and semi-conductors
• Computerized wheel chairs for disabled patients
• Car airbags, gold is used in the sensors to ensure that they will operate when required over the life time of the car
• Spacecraft, to protect computers against short circuiting from heavy ion bombardment
• The transmitter cover in telephone pieces to guard against corrosion
• TVs and VCRs, the microcircuiting is made up of fine lines of gold 

• Astronomy, gold is used to coat the telescopes secondary mirrors because of its high reflectivity of infrared light
• Photocopying machines. These machines use gold-coated mirrors to efficiently reflect the heat involved in fixing the image
• Photo CD’s, Hartman Kodak Company has developed a photo CD system that uses gold as the reflective surface
• Satellites, electronic circuiting and reflective gold sheets
• Security systems, these require long-term unattended reliability, night time infrared. Security cameras use gold for its reflective properties.

• Dentistry, most gold used in dentistry is in the form of alloys. In the USA approximately 13 tonnes of gold each year is used for crowns, bridges, inlays and dentures.
• Eye surgery, gold is used for the eye condition Lagophthalmos, which is the inability to close the eyelids freely. Gold is implanted into the eyelids to help them close.
• Lasers, the new gold vapor lasers create high intensity with the required wavelength to seek out and selectively destroy cancerous cells without harming healthy neighbouring cells.
• Rheumatoid arthritis treatment, gold has been used in the treatment of rheumatoid arthritis since the 1920’s, and has been standard treatment since the 1960’s. According to the arthritis foundation, it appears that gold effects the process that causes joint pain and swelling.
• Thermometer, a new type of gold containing thermometer has been developed that reads human body temperature in two seconds by holding against the outer ear. This is a non-invasive method of monitoring body temperature, especially invaluable when monitoring babies or unconscious patients.
• Research, laboratory coupling of tiny gold particles with DNA has produced new microscopic structures that open a range of research, treatment and diagnostic possibilities in fields such as biochemistry, genetics and medicine. 

•     Aircraft engines
•     Aircraft windows
•     Air pollution abatement research
•     Auto paint drying ovens
•     Engine systems
•     Fire bunker gear
•     Food freshness sensors