Trivia

Hard

Hollywood Clapper Boards Serve What Primary Purpose?

Record Keeping
Audio/Video Synchronization
Camera Calibration
Camera Focus Targets

Answer: Audio/Video Synchronization

Even for those of us who have never set foot on a movie set, the scene is a familiar one: the director yells “Action!” and an assistant slams the clapperboard closed with a crack. Although clapperboards have information on them about the director, date, time, and scene, the information is secondary to their primary function as a synchronization tool for the audio and video tracks. The sharp crack sound visual indicator of the two striped sides of the clapper slapping together make it easy to align the two tracks in post production.

The clapperboard itself has undergone several changes over the last century. Originally one assistant would hold the clapper component, called a clap stick, and another assistant would hold the slate with the scene information and date. Leon M. Leon, one of the pioneers of sound engineering, was the first to see the utility of combining the two devices into one unit which allowed a single assistant to hold both the slate and the clap stick. Later revisions included swapping out the slate for a sheet of white acrylic (black marker on a white background is visible under a wider variety of conditions than white chalk on black slate), adding back lighting, and in the most recent incarnations upgrading to digital timers, color calibration bars, and other modern tweaks.

Trivia

Easy

What Term, Commonly Used To Denote Speedy, Is Also a Legitimate Scientific Measurement?

Trivia

Hard

Which Of These Films Led To Increased Popularity And Sales Of Wayfarer Sunglasses?

Trivia

Hard

Who Coined The Term Meme?

Trivia

Hard

Warnock’s Dilemma Describes An Internet-Related Problem Focused On?

Trivia

Easy

In Computer Lingo, Small USB-Based Hardware Additions Are Called What?

Trivia

Easy

If Alexander Graham Bell Had His Way, We’d Start Telephone Conversations With What?

Trivia

Hard

A Popular Sci-Fi Show Forced The U.S. National Park Service To Post Warning Signs Where?

Trivia

Hard

The Ten Commandments Of The Golden Age Of Detective Fiction Were Intended To Prevent?

Trivia

Hard

There’s A Popular Literary Genre In Japan Where The Works Are Composed Using?

Trivia

Easy

In The Mid-1960s, There Was A Brief But Intense Fashion Fad Focused On Wearing?