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lv_hunter (Member Profile)

NASA finds exoplanet with right conditions for life to exist

westy says...

I think its nice finding potentaily inhabitable planets with life , but its a bit of a cock tease no chance in hell will we ever go to one of these places not in the next 1,500 - 3000 years I doubt we will get a visual light spectrum view of them for at least 300-500 years , and maybe some detailed direct radio observation for 150-200 years.

Its actually prity meaningless/useless finding these planets other than confirming that the universe has many planets and high probability of many earth like planets , but I think we knew that prity much for certain maby 20-30 years ago.

Don't get me wrong I Think of Astrophysics of massive importance and a scientific imperative to persure as it will have tangible ramifications on earth evan if unpredictable ones.

Seems to me that you can learn so much more about space and the universe with exsperments on earth such as being done with the LHC , or observations of how mater is spred out in general and those kind of observations.

still would rather have kepler doing its shit than spending money on wars , and i bet kepler probably only costs a small % of all the communications and media satalites we launch so for the relative cost its probably worth it just for shits and gigles.

How the Large Hadron Collider (LHC) works

How the Large Hadron Collider (LHC) works

Cycles

25 Random things about me... (Blog Entry by youdiejoe)

kulpims says...

1. my nickname since age 6, translated into english, is "worm". no relation to dennis rodman
2. my first girlfriend's name was "buckwheat". she was 6 years older than me. she had long blonde straight hair that would smell of honey even through a cloud of shit
3. my upper front teeth are ceramic. i lost them in a bar fight, falling dead drunk on my face
4. you can't beat me at table soccer
5. i like jazz
6. i smoke a lot of weed, although i prefer hashish
7. I also deal, on and off. hence the constant supply ...
8. i was self-hospitalized to a mental hospital on 3 separate occasions for being fucking retarded
10. i'm bad at math
9. i used to do heroin for a few months. now i mostly pop pills. shrooms optional (and weed is not a drug - it's medicine)
11. i like sci-fi. and comics. and good movies. they make me feel there's hope for humanity after all
12. my all time fav sport's figure is michael jordan. i stopped watching nba after he left for good
14. i dislike nr. 13
15. i belive that at this evolutionary point in time we, as a human race, can not possibly hope to ever comprehend the true nature of reality we find ourselves in. lhc is a useless waste of money and effort
16. five years ago i got my driving licence revoked for dui
17. my penis is bent to the left. i blame masturbation
18. i never met my father. for all i know he could be lord vader
19. i like hitch-hiking
20. i lost my virginity to a fat girl. i only fuck skinny bitches from then on
21. i was brought up to be a catholic but i never really believed in anything. not even atheism
22. i hope there's no afterlife
23. unless there's 72 horny virgins waiting for me
24. i lie a lot
25. i would never ever go charter

Peruvian Guinea Pig Festival - Costumes and Recipes

Richard Feynman: Take the world from another point of view

GeeSussFreeK says...

>> ^Ornthoron:

Funny how he talks about the forefront of science in part 3, and mentions all the unsolved problems at the time of filming. All the problems he mentioned have since been solved, and it turns out reality is simpler than what he describes here, just like he predicted. For instance, we now know that there are 6 different quarks (plus the antiquarks) instead of 3, and that this simplifies the equations greatly.
The LHC is right now investigating the possibility of another property of physics called super symmetry, which if true would double the number of particles we know of. One or more of these new particles might turn out to be what the mysterious dark matter that makes up most of the material universe is composed of. These are exciting times indeed.


I like the part where they discuss (also at the end of part 3) that the very laws themselves are stated without history. That, perhaps, at different times, or even different places in the universe, the laws are mutable. That the rules that most fundamental rules of the universe might always be in flux to some degree. If that be the case, it makes the investigation into this very "monad" centric science difficult.

It would also mean that we could find these laws of the universe, but we would never understand the meta rules that govern them. It would place a logical end point on empirical investigation.

What Would Happen if You Put Your Hand in the LHC

Ghostly says...

Disclaimer: I don't claim to be an authority on the topic, I just thought I'd share my musings for any who may be interested

I'm extremely surprised that none of the physicist could give a remotely satisfactory answer to the beam-hand interaction question. I realise that the energies involved are extreme so weird things may happen and they obviously specialise in more fundamental aspects of the physics but I would have expected all of them to know at least a little bit about the physics of interactions between charged particle radiation beams with solid objects or water.

I only learnt a bit about proton beam therapy used in radiation oncology during my Masters in Medical Physics, and I'll admit I've forgotten a lot of it and can't remember all the calculations or parameters involved, but it seems to me like this would be a similar although perhaps more extreme case. Ultimately you would be receiving some dose of ionising radiation, the amount would depend on various things.

As solid as our hand appears to be it is still mostly empty space on an atomic scale, and there is a very high likelihood that protons in the beam will not collide with anything as they pass through. This is particularly true at very high energies, I forget exactly why... either due to momentum or the time spent in close enough proximity with atomic nuclei or something, but protons interact relatively weakly until they lose enough energy through the few interactions that do occur, at which point the likelihood of further interactions rises exponentially dumping all the remaining energy very rapidly. It is interesting to note here that at medically relevant energies 100-200Mev (17-35 thousand times lower than the LHC) this energy dump requires between 5 and 20cm tissue for the initial slow down to take place before the beams slow enough to dump the bulk of their energy. Your hand is at most a few centimetres thick and barely sufficient enough to do this at 100MeV let alone 3.5TeV. Graph which illustrates this.

Anyway, energy from the beam would be deposited due to some deflections and collisions and result in ionisation of some atoms either directly by collisions or indirectly by xray/gamma rays produced in the interactions. The few direct collisions between protons in the beam and atomic nuclei would also likely result in exotic particles and radiation further contributing to the dose you receive.

Other things to consider are whether the protons that shoot through your hand are still following sensible enough trajectories for the LHC to bend them around for another pass. At near light speeds they would be shooting around the LHC many thousands of times per second so even if the chances of interactions occuring in your hand are slim, each proton that manages to make another pass rather than shoot off on a random path that takes it out of the LHC, will have many opportunities to interact and deposit energy.

So depending on just how many protons are in the beam, and how much energy they dump into your hand, the effect could be anywhere from increased chance of cancer to a radiation burn of some sort if not a hole in your hand (although I suspect that most extreme scenario is unlikely).

All of this assumes my understanding isn't completely void at the energies involved which, if it is, may explain why the physicists didn't mention any of this.

Minecraft Enterprise guy building a 16-bit ALU

RFlagg (Member Profile)

new discoveries about the fabric of space and time

Sarah Palin - U.S. Law should be Bible, 10 Commandments

kceaton1 says...

It's funny that she won't show what it really is like at church w/ closed doors. That might turn off a few Americans. In the end the fate of the planet rests in the American Political System or the Large Hadron Collider. I think the APS has a great chance of reaching critical mass and will need much less velocity to get the job done.

APS Blackhole - 1
LHC Blachhole - 0*

*They did make 438, but they evaporated almost immediately.

Roller coaster tycoon 3 SuicidePark

Logical Evidence That God Can Not Exist

spawnflagger says...

>> ^Almanildo:
>> ^spawnflagger:
I wonder what his take on antimatter/dark-matter is? Is it something which is being created in the LHC?

Dark matter isn't being created in any human experiment yet.
When matter/antimatter is created, what happens is merely that energy goes from one form (kinetic energy in particles) to another (rest mass of matter). The same would go for dark matter if it was ever going to be created in an experiment.


Sorry Almanildo, you are right. The LHC is not yet creating dark matter, but that is one of the aims:
"We need to study dark matter directly by detecting relic dark matter particles in an underground detector and by creating dark matter particles at accelerators, where we can measure their properties and understand how they fit into the cosmic picture."
from:
http://www.uslhc.us/LHC_Science/Questions_for_the_Universe/Dark_Matter

So, how would the law of conservation of energy apply to dark matter and dark energy?
Current theory states that dark energy is homogeneous and makes up 70% of the universe (with visible matter being 4% and dark matter 26%). I realize at the LHC they have only regular energy to use...

LHC is supposed to start back up on Feb 15th, and the proton beams are expected to reach 99.9% speed of light on December 21st 2012. (lol, just kidding. it's actually slated for sometime in 2011).



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