Sodium Dioxide

[amsterdammer]

What is sodium dioxide used for in the theatre, but known as by another name?:

[dundurn]

Sodium Hydroxide (quicklime) was used in the theatre as a lighting source - hence "being in the limelight". Lumps of qhicklime would be heated until they glowed and then the light would be reflected onto the stage as spotlights

[amsterdammer]

Dundern Thank you so , this will win my sister-in-law a large brandy!