Science WEBMs

can someone tell me what the brighter parts in the thrust flame is?

if you pause the webm you can sort of see it forming out of a circle

what is it?
because fuck is it cool or what

File: Radio_Telescope_Array.Timescapes.webm (3MB, 1920x1080px)

3MB, 1920x1080px

I don't really have much science related. Neither did OP, by the looks of it.

>>6636149
You mean when they focus the shuttle thrusters?

Its a pressure/temperature differential that causes the ionized exhaust particles to luminesce at a higher frequency.

Basically when you light a candle, the tip gets yellow because energetic soot particles give off life. Thats more or less what is happening here, just they are focusing those particles and in doing so, raise their temperature and output color considerably.

>>6636159
*give off light. please dont mistake me for that namefag.

>>6636159

cool

>>6635884
That's so beautiful

File: Jupiter.Astronomical_Seeing.webm (753KB, 640x480px)

753KB, 640x480px

Here's a little video I took of Jupiter, which I thought was neat because you can clearly see the vibrations in the atmosphere.

>>6636159

can you explain what the smoke at the start is
its coming out of these pipes on each thruster then as the thrust flame goes off there are these bright tiny beams at the edges of the thrusters

what is that stuff

>>6636169
>Here's a little video I took of Jupite
how?

File: 1403072960496.gif (2MB, 338x182px) Image search: [Google]

2MB, 338x182px

I hope gif is also ok

File: Dancing_School.BBC_Planet_Earth_E9_Shallow_Seas.webm (3MB, 960x540px)

3MB, 960x540px

>>6636174
Telescope at my uni.
I ran out of appropriate .webms, so have some nature.

>>6636190
if this was upside down would it have gone to an impressive height?

File: 1403140285348.gif (1MB, 260x177px) Image search: [Google]

1MB, 260x177px

>>6636193
yes

>>6636173
That smoke is venting of the liquid fuel tanks prior to ignition (basically done so they dont explode accidentally, it increases stability in the tank), and as such its probably water vapor from the air and not the actual gas that you can see, its not smoke at any rate.

The tiny bright beams are the vent gas igniting. They are on the edge of the laminar flow coming out of the thruster and so they get oxygen from the air, so they are cooler and in the visible range. The core of the thruster plume is too hot for you to see, its also possible that that is the part that has not yet ignited yet as it is coming out with force (and they dont want the ignition front to travel back up into the tanks IE challenger incident, althought that happened thru the side, but same fucking sorry ending for everybody).

>>6636169
nice. too bad about the atmosphere, huh?

>>6636149
>can someone tell me what the brighter parts in the thrust flame is?
It's the first mach diamond.
https://en.wikipedia.org/wiki/Shock_diamond

...and yes, they look fucking awesome.

>>6636250
cool, didnt know the name for it

File: Manly_Tears.Paths_of_Glory.webm (3MB, 629x380px)

3MB, 629x380px

>>6636241
>every signal travels to us completely unmolested over gigantic distances
>only to be distorted in the very last fraction of it's journey
Life'd be better without the atmosphere.

>>6636342
life certainly would

File: test_converted.webm (1MB, 640x360px)

1MB, 640x360px

webm with no audio?

who could be behind this

we just don't know

>>6636184
SF6?

>>6636237
can you explain exactly what is happening with this, including the single opposite-handed turn on top?

>>6636645
Levitation melting. The induction coil both levitates the metal and heats it with eddie currents.

>including the single opposite-handed turn on top
Maybe that's to make it stable, to keep it from being repelled right out of the top of the coil? iunno

>>6636645
science bitch

>>6636142
Cassini is tripping.

>>6636169
you are talking about earth's atmosphere, correct

>>6636169
Something about these black and white videos of planets makes me really uneasy.

>>6636413
jesus fucking christ what did you do to that video

File: Orion_Nebula0.jpg (941KB, 4096x4096px) Image search: [Google]

941KB, 4096x4096px

>>6636688
Notice how the filename contains 'seeing', smartass.

First time messing around in ds9. RBG image I made with pictures I made of Orion the same night as >>6636169.

>>6638449
I scrubbed the tracking data youtube put in its videos so it can see who is ripping them

>>6636661
>The induction coil both levitates the metal and heats it with eddie currents.

Yeah it's pretty apparent that there's some massive AC current (and a coolant too?) running through the coil, but how the levitation works is not entirely obvious to me.

It the current's frequency tuned to the inductive susceptibility of the sample (which would vary with temperature I'd guess), or does the coil's shape create a special field gradient that creates a positive equilibrium configuration?

>>6638602
Nice.
What kind of telescope do you have?

>>6636142
This is the best thing I have ever seen. Where can I find more like this?

>>6636191
what are you, like 12?

>>6635884

bump

>>6636142
>You will die in 7 days.

>>6636201
Why does it move up?
Is it cuz the hot gas goes up? But why doesn't the current just use the air below?

File: derealization.jpg (209KB, 600x401px) Image search: [Google]

209KB, 600x401px

>>6636142

>>6636188
fucking gorgeous.

It's fun to think how mind-boggling complex this is, especially when considering all of the physics, chemical reactions, and biology which makes it happen as such.

>>6635884
So anyone have an explanation as to why the lower two main shuttle engines seem to move closer together post ignition?

>>6642603
Possibly because at the start you're just warming/starting-up the system, but you don't want to lift off yet. Therefore you put them slightly to the side. When you do want to lift off you align them. Just throwing ideas.

>>6642399

Heat rises, its pretty hot, what do you mean by hot gas? The air around the arc is heated and ionized by the electric arc. So it rises. Often circuit breakers like these will have an air blast extinguishers or something similar to stop this arc.