[Wonder Warthog]

"Tungsten is like $40 a TON........................"

Also has the highest melting point of any metal. "If" direct conversion to electricity turns out not to be possible (SAFIRE thinks it will be), and a Carnot process is required, tungsten will yield the highest efficiency of a metal substrate.

[Red Badger]

Maybe THAT’s why they want to get rid of incandescent lightbulbs!..............