30,000 watt light bulb experiments

[JoeRoy]

[hli]

I refer to https://whatif.xkcd.com/13/

[littlepea]

this light bulb costs $1500 per piece.....

[RoGeorge]

 

[Doctorandus_P]

A video from 2016 from Photoninduction with a 20kW light bulb:

[RoGeorge]

The only application I can think of (for such a 20+ kW incandescent light bulb) would be, maybe, to illuminate a sport stadium. 

Is that it?  Are there any other industrial uses?
What would be the "normal" use of such a light bulb?  (other than doing a YouTube video )

[DashApple]

The only application I can think of (for such a 20+ kW incandescent light bulb) would be, maybe, to illuminate a sport stadium. 

Is that it?  Are there any other industrial uses?
What would be the "normal" use of such a light bulb?  (other than doing a YouTube video )

Main use is filming part due to the color rendering and single powerful source ; There is a few uses mentioned towards the videos end. Sun simulator or other illumination too

[rteodor]

How does the tap on those variable auto-transformers work without making a short loop ?

[ConKbot]

How does the tap on those variable auto-transformers work without making a short loop ?

1: keep the volts per turn lower than you may keep it otherwise
2: The brush/contact is a carbon brush like used in motors, it needs to be resistive enough to limit the current in the shorted turn(s) but low enough resistance to not overheat with the load current.