Editing 162: Angular Momentum
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 8: | Line 8: | ||
==Explanation== | ==Explanation== | ||
− | |||
− | + | A '''moving object''' (like the Earth) has momentum. '''[https://www.quora.com/If-light-does-not-have-mass-then-how-does-it-have-momentum-1 Momentum]''' is the '''mass''' (size) of the object multiplied by the '''velocity''' (speed) of the moving object. So the Earth moving around the Sun has a '''very high momentum''' because the Earth has a '''large mass''' (size) and is moving at a '''high velocity''' (speed). | |
− | The title text | + | A moving object has to keep moving '''at the same velocity''' for its momentum to stay the same. The momentum of a moving object can increase, decrease, or stop via the force of another object. '''Force''' is the transfer of momentum from one object to another. |
+ | |||
+ | [[Megan]] attempts to slow down the Earth's momentum, and spins counter-clockwise to force her momentum onto the Earth, so that she can spend more time with the one she loves. | ||
+ | |||
+ | The Earth has a massively high momentum, and the momentum that she produces is minuscule relative to the Earth's. And the title text implies that this isn't possible: ''While not being able to reverse time, enjoy your night time. Sunrise always comes too early.'' | ||
+ | |||
+ | The total duration of a human lifetime is measured in physical time. The total duration of a human life is constantly depleting at a constant velocity. So even if she were able to slow down physical time, that would not increase the total duration of a human lifespan. | ||
+ | |||
+ | Her attempt, and her feat, of overcoming the seemingly impossible is grand; and culturally, we value this kind of high romanticism. | ||
+ | |||
+ | Later in [[442: xkcd Loves the Discovery Channel]] the same kind of spinning Megan is used in the first frame to tell that xkcd loves momentum. | ||
+ | |||
+ | Technical notes: Angular momentum [https://www.quora.com/What-is-angular-momentum-in-laymans-terms depends on the axis used for measuring angular momentum]. | ||
==Transcript== | ==Transcript== | ||
− | :[Cueball sits | + | :[Cueball sits on his bed, looking at Megan who is spinning. It is night.] |
:Cueball: What are you doing? | :Cueball: What are you doing? | ||
:Megan: Spinning counterclockwise | :Megan: Spinning counterclockwise | ||
Line 25: | Line 36: | ||
==Trivia== | ==Trivia== | ||
− | * This is one of the | + | *This is one of the [[:Category:Footer comics|five footer comics]] linked at the bottom part of the {{xkcd}} website. |
− | |||
{{comic discussion}} | {{comic discussion}} | ||
− | |||
[[Category:Comics featuring Cueball]] | [[Category:Comics featuring Cueball]] | ||
[[Category:Comics featuring Megan]] | [[Category:Comics featuring Megan]] | ||
Line 35: | Line 44: | ||
[[Category:Romance]] | [[Category:Romance]] | ||
[[Category:Footer comics]] | [[Category:Footer comics]] | ||
− |