length · Various · Modern

Beard-second (5 nm convention)

informal

Record: M536
Definition quality: Informal / humorous defined convention
Conversion mode: multiplicative
Calculator: Fully calculable

Preserve the record's stated qualification and do not display greater precision or universality than the evidence supports.

Definition

One Beard-second (5 nm convention) is equal to 5.000000 × 10^-9 metres.

Reference value

One Beard-second (5 nm convention) is equal to 5.000000 × 10^-9 metres.

Modern use

Used mainly as an informal, humorous, or illustrative reference rather than an official measurement standard.

Did you know?

At 5 nm, one metre contains 200 million beard-seconds. The existence of both 5 nm and 10 nm conventions is the joke—and the reason the parent record cannot honestly have one universal factor.

Sources & evidence

Source tier Tier B/C — recorded secondary/reference source · confidence Moderate

Trivia — https://www.physik.uni-leipzig.de/~vollmer/Teach/2019W_Mechanics/2020_07__UniL__MechanicsIPSP.pdf

Related measurements

metre

length · International · Modern

SI base unit of length. Its definition fixes the speed of light in vacuum at exactly 299,792,458 m/s, with the second defined from the caesium-133 hyperfine frequency.