- 27,217
- United Kingdom
Space In General
- Thread starter BubbleBelly542
- 4,691 comments
- 279,395 views
- 6,838
- Europe
- GTP_Slim
- PzR Slim
The Higgs gives the basic building blocks mass, such as quarks. The 'mass' of a proton for example is mostly made up of the interactions of the quarks via the strong force, which create a load of energy via QCD. I realise I'm terrible at explaining this, so here's a better explanation from reddit. Then there is also this paper I found whilst looking at this a bunch of time ago. Basically most of the mass of particles like Protons and Neutron's is not due to the Higgs. Less than 5% in fact.
Also, energy warps spacetime, not mass. And I think gravity propagates as a wave at the speed of light. So if you say you took the Sun out of the Solar system, just like you wouldn't notice on Earth that it hasn't gone out for 8 minutes, the Earth would still be orbiting the Sun for 8 minutes whilst it isn't there, because the effects of gravity are not instantaneous. Hope that helps (and is correct)
And nealcopper, it just means gravity sticks to the universal speed limit, as it has to, like electromagnetic waves have to.
E=mC^2
Energy and mass are one and the same thing.
- 6,838
- Europe
- GTP_Slim
- PzR Slim
I read both articles you linked. Didn't like the shouty nature of the first and not sure it explains reality to enough of a degree for me to 'believe' it. The second is well beyond my ability, however, reading the conclusions it would appear that we really are no closer to the answer. I get most of my knowledge from the popular media but only take on board that given by experts I have faith in. All I have seen and heard up until this point lead me to believe that the Higgs, by wave of the Higgs field, is responsible for mass. I don't proffess to know the answers and will be sure to find out all I can about this new info you have provided. Everyday is a learning day as they say.
- 1,457
- Exeter
- Emptyone-77
I guess it can come across like that. The mass of the Higgs Boson is expressed in electron volts, eV. That's the kinetic energy gained by an electron when it's accelerated through a potential difference of 1 volt. So the mass of 125 GeV is expressed in terms of energy, not kg, that's why I said it.
What the guy on reddit said was that the Higgs mechanism provides mass for the quarks. The total mass of the quarks within a proton say, is 0.01 GeV. A proton's mass is 1 GeV. So therefore the the Higgs mechanism only provides around 1% of the mass of the proton. The rest is provided by the interactions of the quarks due to the Strong force. I don't really get exactly how that works, but it makes sense.
I do love learning about Physics too
Dotini
(Banned)
- 15,742
- Seattle
- CR80_Shifty
The stars are not for man. (?)
http://phys.org/news/2012-12-houston-problem-space-brain.html
http://zen-haven.com/study-shows-space-travel-is-harmful-to-the-brain/
findings clearly suggest that exposure to radiation in space has the potential to accelerate the development of Alzheimer's disease," said O'Banion. "This is yet another factor that NASA, which is clearly concerned about the health risks to its astronauts, will need to take into account as it plans future missions."
Respectfully submitted,
Steve
http://phys.org/news/2012-12-houston-problem-space-brain.html
http://zen-haven.com/study-shows-space-travel-is-harmful-to-the-brain/
findings clearly suggest that exposure to radiation in space has the potential to accelerate the development of Alzheimer's disease," said O'Banion. "This is yet another factor that NASA, which is clearly concerned about the health risks to its astronauts, will need to take into account as it plans future missions."
Respectfully submitted,
Steve
- 27,217
- United Kingdom
Or it may simply invent clever technology to combat it. Materials technology is accelerating all the time, meaning whether in a capsule or doing a space walk, the potential to reduce risks by huge amounts is always there.
For astronauts doing space walks, the part which has always concerned me more than radiation is the chance of someone getting struck by a piece of 17,000mph space debris. When you consider that a fragment of paint weighing tenths of fractions of a gram can leave a dent like a gunshot in the walls of the ISS, it's a little scary to think what an orbiting object might do to an astronaut.
For astronauts doing space walks, the part which has always concerned me more than radiation is the chance of someone getting struck by a piece of 17,000mph space debris. When you consider that a fragment of paint weighing tenths of fractions of a gram can leave a dent like a gunshot in the walls of the ISS, it's a little scary to think what an orbiting object might do to an astronaut.
CodeRedR51
Premium
- 55,307
- United States
Warp drive possible? NASA thinks so. And they're working on it.
http://gizmodo.com/5942634/nasa-sta...dium=recirculation&utm_campaign=recirculation
http://gizmodo.com/5942634/nasa-sta...dium=recirculation&utm_campaign=recirculation
- 9,055
- Murica
- BasedAckbar
Who needs warp when you got ludicrous speed in Space Balls?
- 4,420
- nealcropper
That seems pretty mad.
CodeRedR51
Premium
- 55,307
- United States
Yeah, one of those "see it to believe it" type of things. But hey, at least they are working on it.
CodeRedR51
Premium
- 55,307
- United States
Anyone interested in watching the Asteroid Apophis cruise by earth in the next hour or so can do so here:
http://events.slooh.com/
Edit: It's more like photos instead of video, but you can listen to the guys on the streaming Google hangout as they talk about it. I think only space geeks like me might be interested enough though.
http://events.slooh.com/
Edit: It's more like photos instead of video, but you can listen to the guys on the streaming Google hangout as they talk about it. I think only space geeks like me might be interested enough though.
Last edited:
- 31,665
- Buckwheat City
- Dennisch
they would be able to reduce the amount of fuel to manageable amount: instead of a Jupiter-sized ball of exotic matter, you will only need 500 kilograms to "send a 10-meter bubble (32.8 feet) at an effective velocity of 10c."
Ten times the speed of light. Without actually moving. 👍
- 4,420
- nealcropper
- 4,420
- nealcropper
- 31,665
- Buckwheat City
- Dennisch
I don't know the finer bits either, but it works by moving space around you. I can imagine it in my mind, I can see how it works, I just don't have the details to explain it.
- 4,420
- nealcropper
Anyone else care to try and explain?
- 3,241
- Desert Island
- GTP_DAN_
Funny that our local morning TV news report started the day by saying that Apophis passed 14 kilometers away from earth, only to be violently trolled at the interwebz and quickly going on to correct herself and add six zeros to the right of that number. 
- 23,800
- Philippines
So they'll power this theoretical warp drive with an energy source we can't observe, can't create and can't store and which may not actually exist?
Sign me up. I still have money left after buying Martian real estate from Elon Musk.
-
Finding microscopic warp bubbles might be as useful as observing the Casimir Effect or vacuum energy. Proof of something that is tantalizingly real but forever out of reach.
Sign me up. I still have money left after buying Martian real estate from Elon Musk.
-
Finding microscopic warp bubbles might be as useful as observing the Casimir Effect or vacuum energy. Proof of something that is tantalizingly real but forever out of reach.
CodeRedR51
Premium
- 55,307
- United States
Click the link and prepare to be amazed.
http://www.astroanarchy.blogspot.fi/search/label/animations
http://www.astroanarchy.blogspot.fi/search/label/animations
- 31,665
- Buckwheat City
- Dennisch
- 4,420
- nealcropper
Awesome picture Dennish.
- 87,216
- Rule 12
- GTP_Famine
Uh... I can, but it's half midnight so I'll have to do the short version.
The universe is made of a fabric called spacetime. General relativity tells us that spacetime responds to the presence of matter (specifically moving matter) by bending and this curvature of spacetime gives us gravitation. Special relativity also tells us that matter is also energy (E = mc^2).
So if you can make a crapload of energy you can bend spacetime.
Now, the mechanics of doing this are fuzzy to me at this time of night, but the concept is that, with sufficient energy, you can curve spacetime so that it goes around you and move - rather than matter and movement causing a curvature of spacetime, energy and spacetime curvature cause movement.
The "exotic matter" mentioned is just non-"normal" types of matter - like quark matter (matter so dense the protons/neutrons have been compressed beyond their intrinsic structural pressure limits, collapsing the bonds between quarks so that the substance becomes nothing more than quarks squashed together with no space between them). In this instance they're probably talking about something kooky (like... muons) and its antiparticle (antimuons), since smooshing them together makes energy and nothing else.
- 4,420
- nealcropper
- 3,244
- Michigan
- Shoe_67
Not exactly. To me it seems like you use the energy to 'bend' this fabric, and in a sense create your own 'gravity' pulling you towards your destination.
- 4,420
- nealcropper
