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/sci/ - Science & Math

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8631458 No.8631458 [Reply] [Original]

Light has mass

>> No.8631467

>>8631458
Sure thing, OP. >>>/x/ >>>/a/nywhereelsebuthere

>> No.8632312

>>8631458
If light has mass then why can't I slow it down?

>> No.8632317

>>8632312
Because infinite inertia maybe?

>> No.8632327

>>8632312
Look up "slow light".
Also, see http://physics.stackexchange.com/questions/1898/do-photons-gain-mass-when-they-travel-through-glass

>> No.8632337

>>8632317
I am sure that violates the 1st and 2nd law of thermodynamics.

>> No.8632339

>>8631458
I thought this was common knowledge

>> No.8632341

>>8632327
There are some linguistic strawman arguements I could throw at you but I'm tired and am now going to sleep.

>> No.8632349

Photons are just the 3-dimensional cross-sections of 4th dimensional fish protruding into our lower dimension.

>> No.8632454

Of course photons have mass otherwise the EMdrive wouldn't work

>> No.8633441
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8633441

If light has no mass then why do photons have momentum?

>> No.8633444

BUT
Do they have a gravitational pull.

>> No.8633446

>>8633441
Because they have infinite velocity
[eqn]\dfrac{\text{momentum of light}}{\text{infinite velocity}}=0 \text{ mass}[/eqn]
QED

>> No.8633447

>>8632312
You idiot, you can. That's why scientists are currently trying to raise the speed of light so we can get around the Universe faster.

>> No.8633616 [DELETED] 

>>8633441
Because the dispersion of a relativistic particle is
\begin{equation}
E_k = \sqrt{(pc)^2 + (mc^2)^2}
\end{equation}

>> No.8633632

>>8633446
>>8633447
im dying of cringe, because the memeing is too much. its. really. too. much.

>> No.8633640

Fucking plebs.

E^2 = (pc)^2 + (mc^2)^2 from special relativity.

If m = 0, then E = pc for massless particles. p=mv is Newtonian bullshit.

Photons don't have mass because they necessarily travel at the speed of light so you can never get into their rest frame.

>> No.8633644

>>8631458

Yeah, no.

Light is a coaxial longitudinal circuit with a rate of induction.

Photons do not exist.

Light does not "travel" "through" anything at any "speed".

Light sources do not emit anything. They are field perturbations.

>> No.8633650

>>8633640

And your garbage is Einsteinian bullshit.

Does nobody here read Tesla???

Does nobody here follow Eric Dollard???

>> No.8633651

>>8633640
you know that, while it has no mass as a motionless particle, light has mass because it has energy . it cannot be a motionless particle. it is travelling with fucking c

>> No.8633653

>>8632327

Now explain how the light "speeds up" once it passes through the glass.

I'll wait.

>> No.8633654

>>8633651
There are no particles.

Everything is fields, and fields are not particles.

Light does not "travel" anywhere at any "speed". It has a rate of induction.

>> No.8633655
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8633655

>>8633650
>Einsteinian bullshit

>> No.8633657

>>8633650
>einsteinian bullshit

W E W
E
W

>> No.8633658

>>8633644
"photons do not exist"
photoelectric effect--> light is a particle and a wave
yes it is a perturbation in the electromagnetic field. but the wave travels tghrought space at the speed of light, which follows from the maxwell equations.

>> No.8633660

>>8633654
well, what is it with the particle wave dualism then ?

>> No.8633662

>>8633651
Not everything with energy has mass you sperg, everything with energy has either mass or momentum. Light has momentum, no mass. That's what the fucking equation says.

>> No.8633664

>>8633650
lad...

>> No.8633665

>>8633662
gravity doesnt care. gravity sees the energy of the light as mass.

>> No.8633668
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8633668

>>8633650

>> No.8633671

>>8633665
NO IT DOESNT IT SEES THE STRESS-ENERGY TENSOR WHICH DEPENDS ON THE MOMENTUM 4-VECTOR WHICH HAS NO MENTION OF MASS YOU FUCKING RETARD.

>> No.8633676

>>8633671
ok thanks.
youre a geek, thought. i didnt calculate this yet...

>> No.8633678

>>8633665
Everything just follows a null geodesic, it has nothing to do with mass, just the shortest distance in curved spacetime.

>> No.8633682

>>8633671
and youre really kinda agressive.

>> No.8633698

>>8633650
>Does nobody here read Tesla???
Only for the keks m8

>> No.8633704

>>8633653
It doesn't

>> No.8633705

>>8633655
>>8633657

Einstein gave you NOTHING.

Tesla gave you EVERYTHING.

>> No.8633707

>>8633658

A wave is not something.

A wave is what something does.

My hand is waving to you right now. Is my hand a wave?

Or is my hand waving?

there are no particles; everything is a field and fields are not particles

>>8633660
see above

>>8633664
Yes?

>>8633668
It is indeed something to think about.

>> No.8633712

>>8633704

kek

Read an experiment for once in your life.

>The speed of light is diminished after it goes through glass! I swear!

kek

>> No.8633743
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8633743

>>8633705
You understand NOTHING
https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect

>> No.8633759

>>8633743

Dude, you just #rekt yourself. You're literally that D-K victim.

>> No.8633769

Light from stars bend around other forms of mass, that is why they are visible.

End of thread.

>> No.8633777

>>8632327
Did you even read your link? Quasiparticles aren't real things, they're models that make the physics easier.

>> No.8633780

>>8633759
On second thought, don't waste your time reading books, nigger
You're beyond saving
Your only hope is that in your infinite brilliance you actually manage to prove the things you think you understand

>> No.8633785

What is the mass of light?

>> No.8633800

>>8633785
500 grams per photon.

>> No.8633870

>>8633777

Aye, brought to us by the Cult of Small Things Bumping Together.

>> No.8633874

>>8633780

I don't even understand it myself.

I just know it to be true.

>>8633800
Good an answer as any, considering that "photons" don't exist.

>> No.8633877

>>8633769
Bullshit.

Go out in space and try to see them without having anything between your eyes and them.

Guess what you see from space with your naked eye when you look at the sun?

Why, nothing, of course. But you are still blinded.

>> No.8633958

>>8633800
>500 grams
two photons are a fucking kilo? you think light is as fat as americans?

>> No.8633960

>>8633446
>infinite velocity
translation: we don't know the exact velocity value but it's very high

>> No.8635084

>>8632312
Checkmate physicians

>> No.8635096

>>8632312
Remove the observer

>> No.8635229

>>8633707
You're just changing definitions around. You aren't clever it's just fucking semantics.

>> No.8635235

>>8633441
https://en.wikipedia.org/wiki/Energy%E2%80%93momentum_relation

>> No.8635332

>>8633874
Photons do exist namely because you named it.

>> No.8635334

>>8635332
The shape of a photon is a star tetrahedron. Set your jimmies to rustled. Brought to you by a 4 dimensional being. Also don't turn around right now.