Science Squabbling

So what happens to the matter in the space that has been vacated/occupied by the time travelling entity?

It's shunted aside or turned into photons or whatever. I guess you'd want to evacuate the receptacle so you haven't got air molecules flying around when your time traveller arrives.

https://en.m.wikipedia.org/wiki/Mass–energy_equivalence

Magnets Humans, how do they work?

https://www.theguardian.com/science/2019/mar/18/humans-earth-magnetic-field-magnetoreception

Ah yes, @hamrack will want me to add 'a controversial opinion'. Well, this is all nonsense, and the Earth's magnetic field is really the sum total of the magnetic fields of all human brains put together.

Ahaha, nice twist there Oliver!

Ah yes, @hamrack will want me to add 'a controversial opinion'.

Very disappointed you didn't go with 'polarising'.

Pffft, you're supposed to squabble--look at Brun, he's doing it right. :)

I'd hate to be ∇·isive...

Calm down you lot. No need to get hysteresisical.

This makes me wanna ∇×(up) in a ball...

We'll nabla hear the end of this, will we?

Depends whether or not everyone calms down ∇ually.

With each pun in here it gets tensor and tensor

A significant potential for more, too.

Slow down or we'll hit Maxwell before it's time

Where's @Magneto when you need him?

Maths puns:

https://www.youtube.com/watch?v=BipvGD-LCjU

(I'm sure everybody in here knows this.)

I find stress makes me tensor...

Slight diversion;
each time I have seen, within Politics, a(nother) menainful vote expressed as MV2,
my (aged Nuffield Physics) shrieks and wants to correct it to;
1/2mv2
(drat, I even typed that with the required superscript in a Libre Office document and copy'n'pasted).
Is there a name for the next in the series?
1/6mv3?

Is there a name for the next in the series?

What's the first? Typically you need at least 3 terms in a sequence in order to deduce a rule which will allow construction of an arbitrary term or element in the sequence.

mv = momentum
1/2mv2 = kinetic energy
1/6mv3 = ?

1/6

Why 1/6, rather than 1/3 or 1/4?

It looks like it's the integral series, wrt v.

It's a taylor expansion of the gamma factor and the full relativistic energy/mass equivalence.

Second answer here explains better than I can: https://www.reddit.com/r/askscience/comments/2r0dtk/are_the_emc2_and_ek12mv2_equations_connected/

The later terms are negligible as they start to include division by increasing powers of c.

And physics stackexchange is fairly authoratative: https://physics.stackexchange.com/questions/435951/what-do-the-small-terms-in-the-series-expansion-of-relativistic-energy-mean

The first part of the Feynman lecture series covers this, IIRC, from first principles.

Thank you.
So no 'real' name for the next in the series.