/sci/ - Science & Math

[Anonymous No.4905792]

>Earth orbits around the sun
>Speed of light is the absolute maximum speed
>Light takes about 8 minutes to travel from sun to earth
so...
>Earth orbits around where the sun was 8 minutes ago
or
>The gravitational link travels faster than light

Discuss

[Anonymous No.4905794]

That makes no sense.

[Anonymous No.4905796]

>The gravitational link travels faster than light
nope

[Anonymous No.4905800]

OP you're assuming that the sun has velocity and the earth would have none if the sun weren't there. I don't think you understand how gravity works.

[Carl No.4905801]

The gravitational potential is information and does not physically exist. Especially it has no mass and can therefore change instantaneously and faster than light.

[Anonymous No.4905802]

it doesnt travel faster than light.
We do orbit where the sun was 8 minutes ago at that instant. but the fact that the sun has changed position in negligible in terms of the stability of Earths orbit and the "speed or gravity"

[Anonymous No.4905805]

>>4905794

[Anonymous No.4905807]

>>4905801
>no mass
>faster than light

u wot m8

[Anonymous No.4905808]

>>4905805
So is that why orbits are elliptical?

[Anonymous No.4905811]

this debate kinda supports the theory that gravity may just be a ripple in space. excuse my ignorance if i come off as flawed in my statement

[Carl No.4905814]

>>4905807
Can't you into physics 101?

[Anonymous No.4905830]

>>4905801
didn`t know about this subject. Are there any other examples of informations (which travels faster than light) on the universe?

[Carl No.4905832]

>>4905830
Electric and magnetic potentials.

[Anonymous No.4905845]

Gravity's forces are not instant
skip to about 3 min
http://www.youtube.com/watch?v=0rocNtnD-yI

[Anonymous No.4905850]

wouldnt' we be able to detect the change in gravity, and thus the speed of it's influence, when we create particles in an accelerator? that happens every once in a while right?

[Anonymous No.4906004]

>>4905792
>>4905805
More like this.

[Anonymous No.4906044]

>>4905832
Potentials don't travel faster than light fag.

[Carl No.4906047]

>>4906044
They don't travel at all. They don't materially exist, they are numerical values evaluated instantly.

[Anonymous No.4906052]

You're thinking "what if the sun suddently disapeared? We would see the light disappear 8 minutes later, but before that, would we feel the effects?"

And this is tricky because... The sun cannot disappear. And if he was taken from his place, even if faster as it could be, we would see the effects of that on the light and the gravity.

[Anonymous No.4906057]

>>4906047
>instant action at a distance
That's not how it works faggot.

[Carl No.4906059]

>>4906057
Yes, it is. Can't you into basics of physics?

[Anonymous No.4906070]

>>4906059
so, theoretically we could send data instantaneously? could a Gantz style fax actually work? (assuming you had the technology to construct a human)

[Anonymous No.4906075]

>>4906059
There is no instantaneous action at a distance. Information cannot propagate faster than c (this includes gravitational and electromagnetic fields).

[Carl No.4906077]

>>4906070
We can't send data this way. We cannot directly measure potentials, but only fields. And change of fields propagates at the speed of light.

>>4906075
You should learn to read. I said potentials and not fields.

[Anonymous No.4906081]

>>4906075
Not him, but for the sake of understanding then would that imply that if our sun disappeared suddenly it would be 8 mins before we no longer saw the light and were shot into space?

[Anonymous No.4906086]

Can' send information faster than c.

You are ignoring the fact that the whole solar system moves, not just sun.

[Anonymous No.4906091]

>>4906081

yes

literally high school physics

typical /sci/ thread

[Anonymous No.4906094]

>>4906081
Correct.

[Anonymous No.4906104]

>>4906091
>Relativity
>High School

I wish

[Anonymous No.4906109]

>>4906104
In which shithole do you live in?

[Anonymous No.4906111]

>>4906104
>implying relativity isn't highschool physics

Any 12 year old can understand it.

[Anonymous No.4906114]

>>4906109
Not him but Calculus isn't even taught in our High Schools until Grade 12.

[Anonymous No.4906117]

>>4906114
>confirmed for shit tier

[metric !1tensorX8Q No.4906120]

Changes in the gravitational field propagate no faster than c.

>>4906081
>What do the laws of physics say will happen if this situation that violates the laws of physics were to occur?