How far is a second?

The moon may be 1.3 light-seconds away, but why on earth do we measure distances using time?

And twitter - @minutephysics

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Music by Nathaniel Schroeder

Thanks to Ross Diener for contributions and to Perimeter Institute for support. Created by Henry Reich

[Wazzok]

A second is 299, 792, 458 meters long.

[HaloofCurls]

I am a science teacher and I am going to use this video in class when we get to earth and space. The kids have the worst time understanding a light year and I love all the different comparisons with "bike minutes" and "plane hours." Thank you!!!

[Akshatgiri]

who else measures time in number of songs.. ?
soo from market to home is about 3 songs..

[SnakeVenomTV]

omg that background base is the best thing ever.

[DedaKing]

I'm gonna take my whale and ride on it to the moon.

[tamircohen]

I love these videos! I wish your channel was called hourphysics so the videos would be longer though :)

[zone]

So, MinutePhysics how far is a Second? You never answered it. 

[ramkrishnan]

I like to  thank minute physics for giving me knowledge about such interesting facts.

[IamNinetyFour]

I understood everything until he said 30 Meter Physics O.o Hahha.

[scriptbrix]

Whats all this feet and miles nonsense? Use the metric system! You're a physicist damn it!

[selazoherencia]

You have such a knack for explaining things. I love watching your videos, and I love your animations. Thanks! Keep up the good work :-D

[ido]

I want to know what's the calculation for the "message in a bottle/ years" units he used in 0:52

[theweirdones]

goddamn!! the lines he draws are straighter than I am!!!

[ohadonut]

It obviously depends on how much you scream at the pilot!

[danielbaydeutch]

A second is equal to the duration of 9.192.631.770 periods of radiation corresponding to the transition between the two hyperfine levels of the ground state of the ceasium 133 atom. Not one 86400th of a day, this is because that the moons gravitational pull which may sometime slightly change the duration of a day a couple microseconds.... DUH

[SavieraYonita]

a second is zero distance when you remain in your initial position

[analyssetodd]

This didn't even explain how far a second is...

[vaisakhvm]

Unique and wonderful ways of explaining things!! Thank you very much.

[ollieash]

You are the best explainer of science I find you very easy to understand and I can really understand what you are talking about well done

[CC-nkhx]

Dah Fuq? I think you just fried my brain.