This is a demonstration of drying water droplets on a gold cup using a carbon line heater.
Please check the following site for more information.
Related page:
Water droplet drying of silver cup 
Water droplet drying of t1 brass plate 
Water droplet drying of t1 copper plate 
Water droplet drying of t1.5 copper plate 
Water droplet drying of t4 carbon fiber bord 
Water droplet drying of t1 SUS304 plate 
Water droplet drying of t1 aluminum plated steel plate 
Water droplet drying of matte surface of aluminum foil