Lighting trivia: colour temperature is measured in kelvin. Stage tungsten lamps sit around 3200K (warm and orangey), while daylight is roughly 5600K (cool and blue). Yes, the hotter number looks colder. Physics loves a plot twist. #LightingTrivia #StageLighting

Lighting trivia: the Fresnel lantern is named after French physicist Augustin-Jean Fresnel, who designed his stepped lens for lighthouses in the 1820s. Same idea on stage, just a soft-edged wash instead of saving ships. #LightingTrivia #StageLighting

Lighting trivia: automated moving lights hit the big time in 1981, when Vari-Lite debuted its fixtures on a Genesis tour. Before that, if you wanted a light to move, someone had to climb up and move it. #LightingTrivia #LiveEvents

Lighting trivia: before electric light, theatres made their brightest spotlights by heating a block of quicklime in a gas flame until it glowed white. Hence being "in the limelight". What saying do you use without knowing where it came from? #LightingTrivia #Theatre

Lighting trivia: the humble PAR can is named after the lamp inside it, a Parabolic Aluminised Reflector. Bulb, reflector and lens sealed into one unit, like an oversized car headlight hanging off a truss. #LightingTrivia #StageLighting

Lighting trivia: a gobo is a thin metal or glass stencil slotted into a lantern to project a pattern, like leaves, window frames or a logo. Nobody fully agrees where the name came from, which feels very on-brand for theatre. #LightingTrivia #StageLighting

Lighting trivia: colour temperature is measured in kelvin. The warm orange glow of a tungsten stage lamp sits around 3200K, while cool bluish daylight is around 5600K. So in lighting, the higher the number, the colder it looks. #LightingTrivia #StageLighting

Lighting trivia: the Fresnel lantern is named after Augustin-Jean Fresnel, who designed his stepped, ring-patterned lens for lighthouses in the 1820s. The same idea now gives theatres a soft-edged wash. From saving ships to flattering actors. #StageLighting #LightingTrivia