[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 76 KB, 356x480, 1262809854215.jpg [View same] [iqdb] [saucenao] [google]
1319860 No.1319860 [Reply] [Original]

Help me out here /sci/
So light from the red part of the spectrum is less energetic than from the blue part, right?
Light as it travels large distances through the cosmos is redshifted due to cosmic acceleration, right?
So light loses energy travelling, but where is that energy going?!

>> No.1319882

u r dum

>> No.1319879

lol oh wow, i remember reading the short story that that picture was based on

>> No.1319888

Spaces niggers steal it

>> No.1319890

It goes up my ass

>> No.1319926

>>1319860
heat
/thread

>> No.1319927

>>1319879
there's a short story?
Please, do post it.

>> No.1319952

>>1319927
ill try to find it

>> No.1319959

>>1319952
thanks bro

>> No.1319964

>>1319926
If that were true, wouldn't intergalactic space glow in the infrared?

>> No.1319973

OP it's the doppler effect. Far away objects are moving away from us due to the expansion of the universe. It works the same way as when an emergency vehicle passes you and the pitch of the siren gets lower - red light is low-pitch light.

>> No.1319993

>>1319973
I'm aware of the doppler effect, that is not what I'm asking about.
I'm asking what happens to the energy lost, due to the doppler effect.

>> No.1320006

>>1319993
What the fuck am I reading?

>> No.1320010

it goes everywhere. stuff that's closest by gets it - aka random particles aka it goes to give those particles energy, thus speed aka heat.

>> No.1320023

>>1320006
What do you not understand?

>> No.1320031

>>1320023
It doesn't lose the energy. You do not understand the Doppler effect.

>> No.1320041

>>1319964

When energy in the form of heat is added to a system, it is stored not as heat, but as kinetic and potential energy of the atoms and molecules making up the system.

It would not necessarily radiate in the form of infared.

>> No.1320062

>>1320031
so you mean that red light isn't less energetic than blue light?

>> No.1320064

>>1320023
The Doppler effect is not because of energy loss.
The Doppler effect is because waves have a certain speed and the two objects referred (one being the observed, the other being the observer) have a relative speed towards one another.
We see red shifting because the other object increases it's speed because that's the nature of the universe. The energy of the waves the object puts out don't change, they are simply observed differently since the waves are more stretched out... Creating a lower frequency for the observer.
Energy on a general level is passed on through every particle the wave comes along though.

>> No.1320079

>>1320064

Light has a constant speed though.

>> No.1320092

ugh, i cant find that story anywhere. its too obscure i guess. i think i might have the original magazine it was published in though, somewhere in my house. too bad im at work lol

>> No.1320097

>>1320092
Thanks for trying!

>> No.1320102

>>1320079
Ofcourse, but that's when we're not taking the observer nor the observed into account which have a speed aswell.
You know about relativity, don't you?

>> No.1320124
File: 72 KB, 350x204, 1opabinia.gif [View same] [iqdb] [saucenao] [google]
1320124

>>1320097
haha np, if i find it ill post it later tonight with the same pic or something

there were some other cool stories i remember, like one about sentient colony of Opabinia or one of those species from the cambrian