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Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 21:38:00 -
[1] - Quote
greetings!
I am currently working on my PhD in Particle Astrophysics and recent events have shown me that i need way, WAY more experience explaining sciencey type stuff to people. SO, i figure, where better to practice then on the forums of a Sci-Fi game =D
ask away! |
Amaroq Dricaldari
Total Annihilation. Pandorum Invictus
62
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Posted - 2012.02.03 21:39:00 -
[2] - Quote
Why can't one change the past and correct their mistakes? This is my signature. There are many like it, but this one is mine. |
Drop-Me-Own-Stocks Darius
Total Annihilation. Pandorum Invictus
2
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Posted - 2012.02.03 21:39:00 -
[3] - Quote
What is the thaumic equivalent to string theory? Who would like to buy a melon?Madame, would you like to buy a--...oh. I see you've already got some.Who would like to buy a melon? |
Kiroma Halandri
Republic Military School Minmatar Republic
0
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Posted - 2012.02.03 21:40:00 -
[4] - Quote
How much wood would a wood chuck chuck if wood chucks could chuck would? |
Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 21:41:00 -
[5] - Quote
There are a number of possibilities but the most likely is simple causality. if you went to the past to correct your mistakes then in the future, you wouldn't have any mistakes to go back and correct, so you wouldn't go back to correct them, but then you WOULD have mistakes etc... *goes cross eyed* |
Amaroq Dricaldari
Total Annihilation. Pandorum Invictus
62
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Posted - 2012.02.03 21:41:00 -
[6] - Quote
Kiroma Halandri wrote:How much wood would a wood chuck chuck if wood chucks could chuck would? Why do you have to be such an ass all of the time? This is my signature. There are many like it, but this one is mine. |
Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 21:43:00 -
[7] - Quote
if by thaumic you mean thaumaturgic, then who cares?! you have MAGIC!! |
Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 21:45:00 -
[8] - Quote
Kiroma Halandri wrote:How much wood would a wood chuck chuck if wood chucks could chuck would?
that depends on the chucking rate, which we would have to measure. we then multiply by the average lifetime of said woodchuck to get the answer...
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Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 21:48:00 -
[9] - Quote
but seriously though, no one's curious? ; ; i needs the practice!
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Amaroq Dricaldari
Total Annihilation. Pandorum Invictus
62
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Posted - 2012.02.03 21:55:00 -
[10] - Quote
Tsadkiel wrote:if by thaumic you mean thaumaturgic, then who cares?! you have MAGIC!! So THAT is where the word 'magic' comes from. Drop the 'thau' and the 'tur'...
Tsadkiel wrote:but seriously though, no one's curious? ; ; i needs the practice!
I am curious, but I really wish I could go back in time and fix all of my mistakes on these forums. Unfortunately, I can't. I can only move in three of the many dimensions that make up this universe. I have absolutely no idea how those Hypercube Factories do it.
But yeah, I think we need some more serious posters. This is my signature. There are many like it, but this one is mine. |
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Jiska Ensa
Unour Heavy Industries
52
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Posted - 2012.02.03 22:05:00 -
[11] - Quote
Explain in simple terms so my idiot brain can handle it, how the Big Bang (expansion, inflation, zero-point energy, whatever) occurs in the "infinite universe" model... |
Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 22:10:00 -
[12] - Quote
dimensions are always fun to talk about :3 extra spacial dimensions add some really interesting consequences to the world.
consider this.
imagine you are holding a rectangular block (like a lego brick or something). the brick has three spacial dimensions: Length, Width, and Depth. if we shine a light over the brick we get a shadow, which is a two dimensional projection of our three dimensional brick. if we change the orientation of the brick with respect to the light, the area of the shadow changes, but it is still just a projection of the SAME OBJECT.
now, suppose we have an object that has many MANY spacial dimensions and we try to observe it. what we will see is a three dimensional projection of that object. if we were to move around that object, its volume may change, but it is still just a projection of the SAME OBJECT.
what does this mean? the TARDIS may not be mathematically impossible, and if we ever get the ability to build objects in multiple spacial dimensions, then we can make things that are bigger on the inside than they are on the outside.
NEAT! |
Lutz Major
Austriae Est Imperare Orbi Universo
290
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Posted - 2012.02.03 22:17:00 -
[13] - Quote
What's your thesis about? |
Amaroq Dricaldari
Total Annihilation. Pandorum Invictus
62
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Posted - 2012.02.03 22:23:00 -
[14] - Quote
Tsadkiel wrote:dimensions are always fun to talk about :3 extra spacial dimensions add some really interesting consequences to the world.
consider this.
imagine you are holding a rectangular block (like a lego brick or something). the brick has three spacial dimensions: Length, Width, and Depth. if we shine a light over the brick we get a shadow, which is a two dimensional projection of our three dimensional brick. if we change the orientation of the brick with respect to the light, the area of the shadow changes, but it is still just a projection of the SAME OBJECT.
now, suppose we have an object that has many MANY spacial dimensions and we try to observe it. what we will see is a three dimensional projection of that object. if we were to move around that object, its volume may change, but it is still just a projection of the SAME OBJECT.
what does this mean? the TARDIS may not be mathematically impossible, and if we ever get the ability to build objects in multiple spacial dimensions, then we can make things that are bigger on the inside than they are on the outside.
NEAT! I know all of that already. That is how the Cargo Containers in EVE work.
But thanks for attempting to enlighten me. This is my signature. There are many like it, but this one is mine. |
Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 22:33:00 -
[15] - Quote
Jiska Ensa wrote:Explain in simple terms so my idiot brain can handle it, how the Big Bang (expansion, inflation, zero-point energy, whatever) occurs in the "infinite universe" model...
this one is a doosy but it is a good one. before i say anything i think it is important to point out that there is a limit to our knowledge of the early universe and the questions like "why did the big bang happen" and "what happened before the big bang" are the holy grails of modern cosmology. to be frank, we don't know yet. there are several ideas out there but few if any are even testable yet.
that said, let's begin! there is a lot to put here so i will probably post and edit in chunks.
1) In The Beginning... (1E-43 to ~ 1E-37 seconds after the big bang) *to be added* 2) INFLATION! (1E-37 to ~ 1E-33 seconds after the big bang) *to be added* 3) The Middle (1E-33 seconds to ~ 3 minutes after the big bang) *to be added* 4) Nucleosynthesis (3 to ~ 20 minutes after the big bang) *to be added* 5) Foggyness (20 minutes to ~ 380,000 years after the big bang 6) The CMB! (around 380,000 years); 7) And all the rest (380,000 years to present) |
Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 22:33:00 -
[16] - Quote
*reserved* |
Tsadkiel
Ushakaron Exiled Collective
1
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Posted - 2012.02.03 22:35:00 -
[17] - Quote
Lutz Major wrote:What's your thesis about?
i'm hunting for Gamma Ray Bursts using HAWC!
BAM!
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Amaroq Dricaldari
Total Annihilation. Pandorum Invictus
62
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Posted - 2012.02.03 23:50:00 -
[18] - Quote
Gamma Ray Bursts?!
WE'RE ALL GONNA DIE! This is my signature. There are many like it, but this one is mine. |
Tsadkiel
Ushakaron Exiled Collective
3
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Posted - 2012.02.03 23:58:00 -
[19] - Quote
well, yes, but probably not from GRBs. their distance and energy suggests that they are primarily an early universe phenomena. if one were to kill us it would have to happen in our universe and just happen to be pointing at us (GRBs emit radiation in two beams pointing in opposite directions) |
W1rlW1nd
The Scope Gallente Federation
35
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Posted - 2012.02.03 23:59:00 -
[20] - Quote
Tsadkiel wrote:Kiroma Halandri wrote:How much wood would a wood chuck chuck if wood chucks could chuck would? that depends on the chucking rate, which we would have to measure. we then multiply by the average lifetime of said woodchuck to get the answer...
The real answer to this is of course self relevant:
A. A wood chuck could chuck as much wood as a wood chuck could chuck if a wood chuck could chuck wood. |
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Tsadkiel
Ushakaron Exiled Collective
3
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Posted - 2012.02.04 00:00:00 -
[21] - Quote
W1rlW1nd wrote:Tsadkiel wrote:Kiroma Halandri wrote:How much wood would a wood chuck chuck if wood chucks could chuck would? that depends on the chucking rate, which we would have to measure. we then multiply by the average lifetime of said woodchuck to get the answer... The real answer to this is of course self relevant: A. A wood chuck could chuck as much wood as a wood chuck could chuck if a wood chuck could chuck wood.
mind = blown
XD
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W1rlW1nd
The Scope Gallente Federation
35
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Posted - 2012.02.04 00:04:00 -
[22] - Quote
Tsadkiel wrote:well, yes, but probably not from GRBs. their distance and energy suggests that they are an early universe phenomena
One of those puppies is aimed directly at the earth tho' [or very very close along the axis]. When I saw images of the star+ring thing in a documentary it sent chills down my spine lol.
Isn't a 'near miss' by a Gamma ray burst pretty devastating as well?
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Tsadkiel
Ushakaron Exiled Collective
3
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Posted - 2012.02.04 00:07:00 -
[23] - Quote
a near miss would be a hit, so, yes? heheheh, but yea, even if you are off axis, the radiation intensity is still pretty large. on average, when they go off, GRBs become the most luminous objects in the sky (though not in the visual spectrum) |
Tsadkiel
Ushakaron Exiled Collective
3
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Posted - 2012.02.04 00:10:00 -
[24] - Quote
as a point of interest, let's have some fun with units! :3 if we assume that the typical GRB has a fluence of 1e-6 erg/cm2 and if it comes from a cosmological source (d = 5 Gpc) and if we assume its energy is emitted isotropiclly (it isn't but roll with it anyway), then we get a source energy, E = 4*pi*fluence*d^2, of around 2e51 ergs, or 4.5e37 Chipotle Burritos heheheh (for a ~2000 calorie burrito) |
Alpheias
Euphoria Released 0ccupational Hazzard
445
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Posted - 2012.02.04 00:10:00 -
[25] - Quote
At what distance from the Sun would you be able to cook egg on the hull of a spaceship? I'd kill kittens and puppies and bunnies I'd maim toddlers and teens and then more |
Tsadkiel
Ushakaron Exiled Collective
3
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Posted - 2012.02.04 00:13:00 -
[26] - Quote
Alpheias wrote:At what distance from the Sun would you be able to cook egg on the hull of a spaceship?
this is a good one and i will need to look up some numbers to calculate it but i CAN do it :3 probably will reply tomorrowish |
W1rlW1nd
The Scope Gallente Federation
35
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Posted - 2012.02.04 00:14:00 -
[27] - Quote
Alpheias wrote:At what distance from the Sun would you be able to cook egg on the hull of a spaceship?
a better question might be, "at what distance would you NOT be able to cook an egg" assuming the surface is facing the sun.
You can already cook an egg on sun exposed surfaces on the earth, and that is through miles of atmosphere.
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Sidus Isaacs
Center for Advanced Studies Gallente Federation
86
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Posted - 2012.02.04 00:15:00 -
[28] - Quote
What is your take on the fate of the universe? Cold dead expansion as it seems to be heading towards now, or something different? |
Amaroq Dricaldari
Total Annihilation. Pandorum Invictus
62
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Posted - 2012.02.04 00:18:00 -
[29] - Quote
Did you know that my bedroom is now irradiated with Alpha Particles?
It all happened when my Smoke Detector broke.
You see, Smoke Detectors work by shooting Alpha Particles around inside themselves (they contain Americium 241), and that allows the air within them to conduct electricity. Thus, when Smoke enters the Smoke Detector, it blocks the Alpha Particles, thus breaking the circuit, thus causing the alarm to go off.
My smoke detector went off for no reason what so ever a few months ago, and now it is hanging from the cieling by its cable. And thus, there are now enough Alpha Particles in my room to conduct the Static Electricity between two halves of a bandaid package, but nowhere near enough to kill me.
But I do hope that it isn't enough to give me cancer either. This is my signature. There are many like it, but this one is mine. |
Tsadkiel
Ushakaron Exiled Collective
3
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Posted - 2012.02.04 00:19:00 -
[30] - Quote
current evidence points towards a heat death :( as the universe continues to expand it will continue to cool towards absolute zero. this fate was surprisingly determined by recent limits placed on the mass of the neutrino! the neutrino density in the universe is actually fairly large! if its mass would have been greater than or equal to 2.2 eV, the neutrino energy density would have been large enough to counter the universes expansion and it would have been cyclical.
alas, we know think it is probably <2.2 eV |
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