Well thats what happens when you mostly do "B" physics. High-energy physics, like the BaBar experiment, is only a fraction of what SLAC does these days. SLAC is heavily involved in photon science and particle astrophysics.
No, if you look at the patent the device allows you to watch one program while taping another. Which most "modern" VCRs could do.
VCRs taped what they were tuned to; if you wanted to watch something else you had to typically tune one channel with the VCR and one on the TV. Which most VCRs did. They had a separate tuner and allowed the analog signal to also pass through to the TV.
There is obviously more to the patent than just that, but this was the immediate difference that I noticed. But it really isn't the difference.
Yes, the exponential factor will have that effect. However, one can also consider the cross section for such a potential, which diverges for 1/r potentials but not for the Yukawa potential. A divergent cross section effectivly means infinte range.
No typo. You have to differentiate between potential and force. Lets take the simple case of a scalar potential V(r) which is given by the integral over the vector field F(r) along some path C. Hence, V(r) is proportional to 1/r for both gravity and electromagnetism.
I've never been 100% clear on this. Is the weak force really infinite but just drops off to effectively-zero faster than electricity and gravity to? Not really. Both electromagnetic and gravitational potentials have a simple 1/r dependence (because of massless mediating particles). If the mediating particle is massive then the potential is not as simple. Take the Yukawa potential which nicely describes pion exchange in the nucleus. It goes as exp(-mr)/r. Now, the Yukawa potential works for massive scalar fields. If the field is not scalar, like the W and Z bosons which are axial-vector bosons the potential is somewhat different, but the point is the same.
I've never seen an equation for weak or strong interactions corresponding to the Maxwell or Newton/Einstein equations for electricity and gravity. Is that because we just don't model weak force as a field because the particles don't move fast enough? Electromagnetic and weak interactions has been unified for a long time now and are nicely described by a Lagrangian. The strong interaction is much more complicated because of the self-coupling of the mediating particles. But that's not to say there is no Lagrangian.
At the moment Sweden has 7 parties in parliament. 4 out of these are in a very narrow coalition government which won the last election by about 1%. The pirate party got 0.63%. The limit to get seats in parliament is 4%. They have more members than the green party , which HAS seats in parliament. If Sweden can prohibit public funding for research on nuclear power due to the demands by the Greens, then I can very well imagine that a party which has even more members can be politically influential.
First of all, the "Alliance for Sweden" has 178 seats as opposed to the oppositions 171 in the parliament, which corresponds to about 3% difference. And, how do you expect they can affect anything in parliament without any seats?
Secondly, you do not have the correct facts about the nuclear power laws in Sweden. The laws concerning nuclear technology from 1984 states two things: 1) construction of new nuclear power plants is prohibited and 2) nobody may work out plans, blueprints, make cost analysis with the intent of building a nuclear reactor in the country. (This is not an word-by-word translation of the law.) The second point was known as the "thought prohibition law". However, as of 2006, that parapgraph of the law has been removed.
The green party had nothing to do with this law in the first place. They had no seats in parliament at the time. The law came about because of the outcome of the nuclear power referendum of 1980. Its not like the greens are the only ones opposing nuclear power. The Social Democrats is very much a divided party when it comes to the issue of nuclear power.
No they don't. The Lorentz force is F=q(E + vxB) (x represents vector product). q is the charge so a neutron will not experience any Lorentz force. Now, since neutrons consist of three quarks, each of the quarks will experience a force but on average the sum of the force will be zero.
Since electric and magnetic fields are carried by photons, it would make for a strange universe if the photon had an electric charge, and were affected by those fields. In effect, it would mean that the photon would couple to itself, leading to all kinds of strange effects, like rays of light bouncing off of each other or attracting each other (in vacuum). Such effects are not observed.
It is very true that those effects are not observed and that in the case of photons it would be a strange world. But, in the case of the strong interaction, the force is carried by gluons which do couple to themselves. And this does not lead to a strange Universe.
Correct me if I'm wrong, but don't we have NO way to detect electrons that don't strike normal matter? As in, if I send a stream of electrons 10 meters away from you in your spaceship, aren't you completely oblivious to what I did if I missed?
You are wrong. Electrons in magnetic fields radiate synchrotron radiation and wee know that the Solar system and the Milky Way is pervaded by magnetic fields.
I see, thanks. I was told this info by the Japanese at RIKEN, that Stanford had closed a similar facility. And that Japan could only afford it because it was on the political agenda. I remember a 300 million dollar number but don't know if that is yearly or what it cost to build.
Stanford might have had a similar facility, but that facility is not SLAC.
As for elephants, a RIKEN page in which it collaborates with another lab (I don't remember if it is Brookhaven or what) calls itself experiements with particles that weigh as much as bulls, with a logo of two bulls slamming into each other horn to horn.
There are no such heavy particles. Remember, particles are smaller than atoms. There are some really heavy, particle-wise, particles but far from bulls. Must be some analogy of some sort. The BaBar experiment was first called the B-Bbar experiment because it is an experiment where they measure properties of the B-Bbar system. BaBar is just a nicer name.
I visited RIKEN's accelerator in Wako City, Saitama Prefecture, Japan last year and was told they were one of only three facilities in the world manufacturing proton beams for medical purposes. The other two were in Germany and at Stanford, but I was told that Stanford had closed its facility so now there are only two.
You are confused. SLAC != Stanford. SLAC is operated by Stanford under an agreement with the DoE. The accelerator at SLAC does not provide proton beams. It has been a electron-positron machine ever since operations started. It is currently supplying the BaBar experiment with electrons and positrons and it is also undergoing modifications to accomodate the LCLS, the Linacc Coherent Light Source.
Perhaps antimatter is better than proton beam, I don't know.
Better for what purpose? Remember, it is damn hard to store antiprotons, not to mention antimatter.
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Yes, the exponential factor will have that effect. However, one can also consider the cross section for such a potential, which diverges for 1/r potentials but not for the Yukawa potential. A divergent cross section effectivly means infinte range.
Sure it does. I don't think you understand what I am writing.
No typo. You have to differentiate between potential and force. Lets take the simple case of a scalar potential V(r) which is given by the integral over the vector field F(r) along some path C. Hence, V(r) is proportional to 1/r for both gravity and electromagnetism.
First of all, the "Alliance for Sweden" has 178 seats as opposed to the oppositions 171 in the parliament, which corresponds to about 3% difference. And, how do you expect they can affect anything in parliament without any seats?
Secondly, you do not have the correct facts about the nuclear power laws in Sweden. The laws concerning nuclear technology from 1984 states two things: 1) construction of new nuclear power plants is prohibited and 2) nobody may work out plans, blueprints, make cost analysis with the intent of building a nuclear reactor in the country. (This is not an word-by-word translation of the law.) The second point was known as the "thought prohibition law". However, as of 2006, that parapgraph of the law has been removed.
The green party had nothing to do with this law in the first place. They had no seats in parliament at the time. The law came about because of the outcome of the nuclear power referendum of 1980. Its not like the greens are the only ones opposing nuclear power. The Social Democrats is very much a divided party when it comes to the issue of nuclear power.
No they don't. The Lorentz force is F=q(E + vxB) (x represents vector product). q is the charge so a neutron will not experience any Lorentz force. Now, since neutrons consist of three quarks, each of the quarks will experience a force but on average the sum of the force will be zero.
It is very true that those effects are not observed and that in the case of photons it would be a strange world. But, in the case of the strong interaction, the force is carried by gluons which do couple to themselves. And this does not lead to a strange Universe.
Correct me if I'm wrong, but don't we have NO way to detect electrons that don't strike normal matter? As in, if I send a stream of electrons 10 meters away from you in your spaceship, aren't you completely oblivious to what I did if I missed?
You are wrong. Electrons in magnetic fields radiate synchrotron radiation and wee know that the Solar system and the Milky Way is pervaded by magnetic fields.
I see, thanks. I was told this info by the Japanese at RIKEN, that Stanford had closed a similar facility. And that Japan could only afford it because it was on the political agenda. I remember a 300 million dollar number but don't know if that is yearly or what it cost to build.
Stanford might have had a similar facility, but that facility is not SLAC.
As for elephants, a RIKEN page in which it collaborates with another lab (I don't remember if it is Brookhaven or what) calls itself experiements with particles that weigh as much as bulls, with a logo of two bulls slamming into each other horn to horn.
There are no such heavy particles. Remember, particles are smaller than atoms. There are some really heavy, particle-wise, particles but far from bulls. Must be some analogy of some sort. The BaBar experiment was first called the B-Bbar experiment because it is an experiment where they measure properties of the B-Bbar system. BaBar is just a nicer name.
So now we have talking French elephants doing particle physics?
Yes, pink ones too.I visited RIKEN's accelerator in Wako City, Saitama Prefecture, Japan last year and was told they were one of only three facilities in the world manufacturing proton beams for medical purposes. The other two were in Germany and at Stanford, but I was told that Stanford had closed its facility so now there are only two.
You are confused. SLAC != Stanford. SLAC is operated by Stanford under an agreement with the DoE. The accelerator at SLAC does not provide proton beams. It has been a electron-positron machine ever since operations started. It is currently supplying the BaBar experiment with electrons and positrons and it is also undergoing modifications to accomodate the LCLS, the Linacc Coherent Light Source.
Perhaps antimatter is better than proton beam, I don't know.
Better for what purpose? Remember, it is damn hard to store antiprotons, not to mention antimatter.