- Yuna: Wheee!
- Yuna: Higher, mom, higher!
- Yuna: I can almost reach the off button of my anti-gravity generator!
- Ye Thuza: Yuna, repeat after me: “In this house, we obey Einstein’s laws of relativistic gravitation!”
|
|
Currently on hiatus :-(
 S&W in German/auf DeutschGaia (my fantasy comic) Scarlet (my science fantasy comic) |
|
| Sandra and Woo is supported by our patron BorgLord. Thank you very much! |
|
![[0975] Floating Weightless](/comics/2018-03-29-0975-floating-weightless.png "[0975] Floating Weightless")
[0975] Floating Weightless
└ posted on Thursday, 29 March 2018, by Novil
Click here to see the comments!
Sandra and Woo by Oliver Knörzer is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. See the About page for details.
Privacy Policy | Impressum | © 2008 – 2025 Oliver Knörzer
Yuna, breaking the laws of nature since 2008.
Looks like the Anti-Gravity generator only affects dead and/or inorganic matter which is why it is not affecting the two of them.
shouldnt Juna also be attracted to the device?
anyway – Einstein general relativity works even with repulsive gravity. (repulsive gravity would exist between “mass” and “antimass” – akka something which would have opposite signs in tensor of space.
mass and mass would attract, as would antimass and antimass. It comes with stuff like negative kinetic energy (achieved by negative m in equasion) to remain conservative.
“Lisa, in this house we obey the laws of thermodynamics.”
It’s funny to see the difference between the German version (paraphrasing a popular German nursery rhyme) and the English version.
@ Paeris Kiran:
No.
Mass, regardless of sign, should fall down in “regular” gravity. Suppose it didn’t. Stand in a sealed room on the ground. Release an apple and an anti-apple (not antimatter, but I don’t know what else to call it.) One goes up and one goes down.
But if you’re floating between stars and rockets fire beneath the floor, the apples stay put and the floor rises to meet them. You can distinguish between acceleration and gravity (even if the room isn’t large enough to reveal a gradient) so the Equivalence Principle is violated.
Anti-gravity matter has been extensively (though only theoretically) studied. All matter, of whatever sign, is repelled.
Which means that if you stick a Plus and a Minus on opposite ends of a rod, the whole combo will accelerate to one side indefinitely. It the net mass is zero then kinetic energy, gravitational potential energy, and momentum are all conserved. (If the net mass is not zero, then forces exerted on the rod break it.) Try looking up Dr. Robert Forward.
Of course, no negative mass has ever been found. Where would you look? It wouldn’t clump together into suns and planets.
Better that it’s inside the house than outside it, otherwise all that furniture and stuff would be in space by now.
“Yuna vs. physics” is a tag now.
@ Edda:
I believe that’s not what her latest gadget does. I think the generator is bringing into existence tiny singularities which have double the Earth’s gravity inside or above the roof of the house.
And “I believe” that, it could be anything, knowing Yuna.
@ B95:
I love how Yuna vs Physics is a tag.
But those laws are boring… Even Stephen Hawking thought so…
@ Jack:
I could argue that Yuna and Ye Thuza would be on the ceiling too if that was the case.
But I never managed to pull off the double-slit experiment with matchbox cars, so her inventions are above my pay grade.
🙁
Judging by her expression, she looks like she should be going “AAAAAAH!” rather than “WHEEE!”
Don’t forget Newton’s Third Law—if the floating stuff is in the sky, then the antigrav box must be glued to the floor.
…”why isn’t it affecting them” is probably not a productive question, is it?
Fun fact, this comes out tomorrow in my time zone. I can only access it through a bug. Makes the whole comic a lot more interesting in that context.
From first panel to second panel, Yuna somehow turned 180 degree around. Then again this is kind of pointless when the anti-gravity generator is turned on…
Instead of jumping they should use a vertical mobility enhancing device (also known as “ladder”).
@ Edda:
that only applies if you force kinetic energy to be possitive for ALL objects irresponsive of the “sign” of their mass.
in order to make equivalence principle work on such condition what you postulate is indeed required. However if you permit kinetic (and in fact even rest energy) of the object to be negative you can have negative mass objects still attract each other and repel from “mass” objects.
and you would be hard time finding them simply because all of this matter would be repulsed from “our standard” matter in the universe – since its mostly electricaly neutral.
They should just get Larissa; it was established that she can defy the law of gravity. http://www.sandraandwoo.com/2012/02/13/0350-blackmail/
@ Black Rose:
maybe the ladder is somewhere up there already 😛
@ nespa:
It is (left side of the third frame). It’s still easier to reach it and then, using it, reach the generator.
Hey, I remember that punchline from The Simpsons!
Is this the first ‘Simpsons did it’ moment for Sandra and Woo?
A good run if so.
FIRST, secure all the objects so that they will not crash down to the floor once the generator is off.
SECOND, get a ladder. Tsk.
@ Edda:
As I understand it, the double slit experiment with matchbox cars requires that they be absurdly close to absolute zero when they hit the slit, so you probably do have to be someone who can violate the laws of thermodynamics to do it in your bedroom.
That first frame is gorgeous; you really feel the depth of the action.
@ Paeris Kiran:
A moving “negamass” has negative kinetic energy (and momentum). That’s why the (hypothetical) Positive & Negative non-rocket spacedrive “works.” KE remains zero no matter how fast it travels.
Your reasoning reminds me of the “Lensman” novels. They create a Negamass (which the author thought was anti-matter. It cancels out positive matter if the two touch and both are reduced to gamma rays.) and it has negative inertia. Pressor beams meant to shove it away merely suck it in faster. Repelling it demands tractor beams. The enemy it was used against figured that out — too late.
@ Brett Bellmore:
We’ve already seen Yuna can reverse entropy. Someone should go back and add “Yuna vs. Physics” tags to previous strips.
@ An Cat Dubh:
Would you be willing to provide a translation for the German illiterates?
Ominous wrote:
Perhaps it’s related to the difficulty in sending non-living matter other than mimetic polyalloy backward through time. How long can it be before Yuna invents Skynet?
Sind wir nicht alle ein bisschen….. Yunaaaaa?
Give Yuna a lab and an assistant already!
One of these days, that little girl is going to blow up the Earth. 0_0
Or invent ice-9.
Okay, I want to know= years ago, was Yuna working on an IQ drink and accidentally leave some out and a young raccoon kit later named Woo came along and had a sip? Because that would explain so much! Also, I’m surprised at Ye Thuza, clearly this situation calls for an bow, arrow, rope.
…at what point will Yuna take over the world? Is she interested? I don’t think I want to stop her, if she tries.
I’m fascinated in what she might build if the whole world’s resources were at her fingertips…
I’m glad transcriptions came back.
@ Bree:
In Germany there is a nursery rhyme “Messer, Gabel, Schere, Licht, sind für kleine Kinder nicht.”. Translated literally ist would be like “Knife, fork, scissors, light are not for small children.”. Translated in a rhyme form you could say “knife, fork, scissors, flames, have no place in children’s games.” or so.
In the last panel there is in the German version “Gravitation, Entropie und Licht sind für kleine Yunas nicht” which could be translated in rhymes to “Gravity, entropy and light for small Yunas should be denied.” 🙂
Sorry, I’m not used to rhyme in English…
LH42
@ Edda:
my true point in general is that that both aproaches put some assumptions over what the universe is.
Assumptions that are virtually impossible to test. Just because we have not observed something yet does not meant its generaly impossible. especially if properties of given object of phenomena would make it difficult to see.
Equivalence principle is in essence defined from a mathematical tool we used to describe universe – for all things seen so far it hold true.
but it would work equally for hypotetical scenario with negative kinetic energies, negative mass and “negative” curvations of spacetime.
Einstein himself said that his equations would work even for repulsive gravity – wheather it was a real option in this universe or just mathematical relict is another question.
Oh, goodie, a strip that’s not about gaming. I get this one. I feel better now.
@ Rock:
Ice-9 is magic, not science. Inventing that would be worse than destroying the world!
Brian Gentry wrote:
I don’t think she interested in talking over the world as such, other than perhaps as curiosity a) can it be done & b) how fast I think she’d rather be in the lab playing dice with the universe
Besides conquering the world is easy, compared to the logistics of running it.
Brian Gentry wrote:
See also: patima inverted.
First and second panels are supposed to be Yuna on a swing. The third panel’s the joke. I think we’re just too envious to be really entertained.
So why isn’t Ye Thusa affected by the A-G? She scowled at it. It’s scared of her now.
TaranAlvein wrote:
I’m assuming you’re referring to the Ice-9 from 8-bit theatre. I was referring to the theoretical polymorph in Kurt Vonnegut’s “Cat’s cradle”: https://en.wikipedia.org/wiki/Ice-nine & https://en.wikipedia.org/wiki/Cat%27s_Cradle
@ Razel:
Or, Ye Thuza turned around? (That said, applying Occam’s Razor to anything Yuna’s involved is somewhat suspect.)
Of course, why not just have Yuna grab that beam and climb on, then she could reach the switch at leisure…
Quote: “Do you ever look at someone and wonder, what is going on inside their head?”
oo
_
…
Shouldn’t she not be able to float down?
I forsee another spanking in her future…
thisguyhither wrote:
Don’t know if anyone got that reference. But how long will it be before Yuna blows the house to smithereens?
Only Ye Thuza would have the fortitude to try and enforce the “laws” of Science.
Black Rose wrote:
The ladder is stuck on the ceiling.