How do speedbubbles interact with giant bodies?

[Sythrin]

Coppermind states that as long as a part of somebody is inside the body. The whole effect is affecting them. So what if something big like a Chasmfiend is touching it if you create a giant krakenlike creature with Midnight aether.

Would it be affected normaly and flail its appendages at highper speed outside the bubble?

[Frustration]

Theoretically yes, but anything they touched would also be affected, so it wouldn't really have much of an impact

[Trusk'our he/him]

6 hours ago, Sythrin said:

Coppermind states that as long as a part of somebody is inside the body. The whole effect is affecting them. So what if something big like a Chasmfiend is touching it if you create a giant krakenlike creature with Midnight aether.

Would it be affected normaly and flail its appendages at highper speed outside the bubble?

Initially, I was thinking yes it would affect them since it only requires a portion of the body to touch the bubble in order to speed them up. Wax shows this to be the case in TLM during the final fight against the fakers.

However, I think sufficiently large beings might not be affected since the trains Speed and Slowness bubbles have been used on do not speed up or slow down.

It could be a perception thing though, in which case a Slider/Pulser could probably make it work, but even if they could it probably won't speed them up that much since there's so much more mass to affect than normal. The Investiture the Allomancer has is finite, so it's effects would likely just become very spread out and largely impotent. 

[alder24]

22 hours ago, Sythrin said:

Coppermind states that as long as a part of somebody is inside the body. The whole effect is affecting them. So what if something big like a Chasmfiend is touching it if you create a giant krakenlike creature with Midnight aether.

Would it be affected normaly and flail its appendages at highper speed outside the bubble?

It looks like that if something is large enough, it wouldn't be affected by the time bubble even if a part of it is passing through it.

Spoiler

Kurkistan

If you are standing inside of a time bubble, and throw a spear out of the bubble, what happens to that spear as it traverses the border of the bubble? Are different parts of the spear ever in different "time zones," going fundamentally different speeds?

On that line of reasoning, what would happen to a train and its occupants if Marasi stood next to railroad tracks holding up a Cadmium bubble while that train sped by?

Brandon Sanderson

In general, a large object going through a time bubble is not going to notice. An object is either in or out, and it depends in part on how the object views itself. People inside the train would be inside of its influence, and wouldn't notice the bubble. The spear would go from one to the other, but would never be in both.

17th Shard Forum Q&A (Sept. 26, 2012)