Domain: weber.edu
Stories and comments across the archive that link to weber.edu.
Comments · 25
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Re:That is not a valid counter point
Not original poster, but here you go.
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Re:83% of statistics are made up
Not original poster, but here you go.
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Re:That's fresh
Not original poster, but here you go.
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Re:That's fresh
You might get a better response if you linked to the study itself..
It's number 7 in the table. Also note that he's counting both 'agree' and 'agree with provisos' from the study as 'agree'. -
Re:This means I am -207 million years old.
Magnets do not work through science. We know how they work through science. They work through generating an magnetic field.
This is a tautology if I have ever seen one. Actually magnetism is a relativistic effect of electrostatics. Billions and billions of electrons traveling along a wire with a net current experience a lorentz contraction. The contraction is small, but because there are billions and billions of them, the effect adds up. Hence it appears as if the electron density in the wire has increased for someone at rest. Hence an excess of electrons repels or attracts an object with a an excess or neutral density of electrons.
Link to website run by someone smarter than meYou have just proved my point.
Science is about admitting you could be wrong, but believing you are right (based on evidence or searching for that evidence).
That's the difference between science and religion: science can be proven wrong.Absolutely. It is my opinion that people here take the word of 'scientist' with too much authority, and never really question what they are saying, much less bother to understand what they are saying. The
./ user feels that "Science is Science and is always right, if you disagree you are a fag." In this sense it is analogous to a dogma.I was debating an avowed atheist a few years ago. He claimed that scientist could see electrons. It didn't matter that electrons are point charges, and the wavelength of visible light is much much larger than the diameter of an electron. Apparently 'Scientist' have amazing eyes that work on principals that can only be described as godlike. If he would have said that electrons are a logical construct based on best available evidence, I would have agreed with him. But he really believes that scientist can see electrons. He also feels smug and superior to anyone who does not believe in 'science'.
Religion isn't the enemy of science. Science isn't the enemy of religion. Both try to explain the world. Religious people just see the universe as a majestic creation deserving awe, wonder and further study.
I just take fault with people on both sides to whom the universe is a closed book.
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Re:History RepeatsMeet Archimedes http://physics.weber.edu/carroll/Archimedes/calculus.htm Sure Archimedes used integral calculus, just like many other Greek mathematicians. Other mathematicians had used differential calculus as well. But as far as we know, Newton and Leibniz were the first to formulate and prove the Fundamental Theorem of Calculus, the basic relationship between differential and integral calculus.
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Re:History Repeats
Meet Archimedes http://physics.weber.edu/carroll/Archimedes/calculus.htm
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Re:Currently not worth the educational investment
It's possible to win the lottery
You don't have to win the lottery to work your way through college.
Also, going into the military at this point in time is a completely retarded idea unless you want to end up in Iraq/Iran.
I agree. Actually, I very nearly went to Iraq in 1991. I got orders, but the commanding general threw a hissy fit that they were only calling up his cops and his firefighters, and not his pilots or fighter jets, so the orders were cancelled and another group was called up instead. So it was risky then. Now, of course, you're nearly guaranteed to go to Iraq.
I went to a damn expensive school and have loans beacuse of it, but I don't mind. I got a great education and had a wondeful time. There are resources that a world-class university can offer that smaller schools just can't.
Absolutely. And the people I know who went to world-class universities largely feel the same way about it -- that it was worth it. But that doesn't change the fact that it's not necessary, even if it is really cool and a lot of fun.
It's not to say that cheaper schools suck, but ITT is not equivalent to MIT.
I'm not talking about ITT. I'm talking about a real university, just one that isn't so expensive. There's no doubt that MIT has advantages over such a school (here's mine), but you can get a very decent education for a lot less money.
Their degrees are not interchangeable
Here I disagree, at least in many instances. A four-year degree from the big schools will get you a better first job, but by the time you've got a few years experience that no longer matters (at least in the software field; I can't speak for others).
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Re:For Sale: Red Barchetta, low mileage, great con
Luckily for you, Volvos are legendary in their longevity :)
I wonder though, if there's a simple list out there of all automobiles with a "black box" - I can't find an organized, easy to read list on Google yet, but here's a list of all the supported car models carrying Vehtronics boxes (and the box locations)... and the OEM database for On Board Diagnostics (looks to be very complete). Oh, and some info on pre-1995 models.
Post back if you come across a better listing !
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Re:textbooksAt $130 retail price, the professor is probably taking half or $50.
A typical royalty is about 10 to 12 percent of "net" (i.e., wholesale), which works out to be about 7.5-9% of retail, not 38%, as you seem to be assuming.and thats more than 4 colors.
"Four colors" refers to the number of colors of ink, not the number of colors that can be produced by mixing them, which is theoretically infinite.$20 to $30 to print a book? You gotta to be kidding. 0.10 a cents page?
The textbooks that are $130 typically have a page count of about 1000-1100 pages, rather than the 200-300 pages you seem to be assuming. The ppb (paper, printing, and binding) cost for black and white upper division physics textbooks is typically about 3 dollars. Four-color printing costs four times more than one color, and the $130 color undergrad textbooks are typically about twice the page count of a graduate text, so 3x4x2 gives about $24. The price is really a setup cost; once you've got the press running, the cost to make one more copy is very small. This is all going to depend a lot on the length of the press run. -
Re:textbooksAt $130 retail price, the professor is probably taking half or $50.
A typical royalty is about 10 to 12 percent of "net" (i.e., wholesale), which works out to be about 7.5-9% of retail, not 38%, as you seem to be assuming.and thats more than 4 colors.
"Four colors" refers to the number of colors of ink, not the number of colors that can be produced by mixing them, which is theoretically infinite.$20 to $30 to print a book? You gotta to be kidding. 0.10 a cents page?
The textbooks that are $130 typically have a page count of about 1000-1100 pages, rather than the 200-300 pages you seem to be assuming. The ppb (paper, printing, and binding) cost for black and white upper division physics textbooks is typically about 3 dollars. Four-color printing costs four times more than one color, and the $130 color undergrad textbooks are typically about twice the page count of a graduate text, so 3x4x2 gives about $24. The price is really a setup cost; once you've got the press running, the cost to make one more copy is very small. This is all going to depend a lot on the length of the press run. -
Re:Wait a sec, this story isn't about "dark matterThis book is an excellent starting place if you're interested in getting into astrophysics. Lots of fun problems, and it's a really good intro if you can remember first year physics and math.
Mind you, it's an astrophyisics textbook so it ain't cheap.
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Re:Cue the assinine comments...
he was a paedophile and racist.
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Re:Do you have public libraries...?
You're asking the Eqyptians if they have libraries? They practically invented libraries. Perhaps you have heard of the Great Library of Alexandria?
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Same 'Ol Story
This has been going on for years, and I bet if every college/university had an online newspaper publication you could find hundreds of related stories to this.
The story, as it goes with me -- personal experience -- If I ever drop a class, early in the semester after buying a book, I can rarely sell it back to my bookstore, due to a couple possible problems but most commonly they already have too many books of the same title in their used section. It is cool that many university bookstores often have a buy-back or a used section, but that generally only helps when you buy the book. You have a little bit of a chance to sell your book back, but not very likely.
You also always have to deal with the situation of when your professor changes books from semester to semester, and the only books available are brand new books, as opposed to 2 year old books (a good majority of classes/books will allow for well over 2 years, before any major changes take place that an old book can handle).
There is a student organization that is put together where you can actually barter/trade/sell/buy or whatever books you have with other students. This is probably the best idea that anyone has come up with as far as books go at my University.
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Pringles
anyone notice the can of Pringles in picture 19 looks like it was a primestar parabolic and a Pringles yagi.
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Re:With Distances this great...
Not with 370ms ping times...
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Re:Fine tradition of microwave hacking
. . . These kids are really at home with UHF and microwave radios!
I'm going to go ahead and take it that you have never listened to KWCR 88.1 FM -- The college's radio station. You can't pick up a signal from the radio station once you're 10 miles away from the school!
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Re:Hmm..
The Project Information page lists two 1.5W bidirectional amplifiers. But you are right, two primestar dishes with modified feedhorns, that's good for about 30dB of gain per dish/feedhorn assembly.
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The FCC is going to be on their ass!
They used a pair of 1.5 watt amplifiers to boost the signal to the dishes.
The strange thing (for me) is that they report a ping time of 372 ms. Anyone else find that very high? Did someone change the speed of light while I was asleep? They don't say what kind of amplifiers they used - maybe the lag is from the amp? -
Re:Decreasing air pressure...
Average human body radiates about 1000 watt (calculations here.
We can approximate your turkey produces about 100 watt then.
With temperature drop we're interested in (from some 300 to 270K) we can neglect the temperature change.
That is 100J/s. Divided by 4200, 0.023 cal/s loss.
1 calorie will raise/lower temp of 1 gram of water 1 degree.
We want 6000 gram of nearly water (over 80% body weight) down 30 degrees. 180kcal calories to radiate. 7800000 s that is 90 days. Before the turkey freezes, it will be long rotten.
Of course, you can repeat the rubber experiment. Pack the turkey in a big plastic bag with some, but not much air in it. Let it out into vacuum, the bag will immediately inflate by decompressing the air, and the decompressing air will immediately sap all heat from the turkey. Somebody calculate dimensions of bag before and after decompression? :)
Mod points to good mare trolls please. -
Re:Who Invented Calculus
I think Archimedes had them both beaten by 2000 years or so.,
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Electrical and gravitational magenetism
Here is how you can use relativity and electricity to "explain" magnetism:
Say we have two wires separated by a certain distance, each carrying a parallel current. There will then be a magnetic force between the wires pulling them together. Where does it come from?
The actual current in the wire is traveling at a very low speed- about a few cm/sec. (Wires transmit electrical impulses very quickly, so usually people are surprised to learn that the actual electric current itself moves very slowly, slower than water through a pipe.)
Look at the situation from the perspective of a test charge, a conduction electron in one of the wires. Although individually it is bouncing around in random directions at thermal velocities, its drift velocity is that of the current in the wire- a few cm/sec, or 10^-13 of the speed of light. And of course, we all learn in school that relativity only becomes important at velocities approaching the speed of light!
From the perspective of this test charge, the negative conduction electrons in the other wire are standing still. But the positive charge in the wire is moving, and shrinking in the direction of its motion. What is its Lorentz length contraction? It's absurdly low, 1 part in 10^26. But this means the linear charge density of the positive charges becomes that much larger than that of the negative charges in the wire, and the test charge feels an attraction to it. How much? It must be tiny. But remember, the positive and negative charge densities in the wire are huge even though they are closely balanced. A gram of copper contains 1500 coulombs of conduction electrons. If you do the math you will find that the predicted electrical force expected from the Lorentz contraction is equal to the ordinary magnetic force we would normally expect between the wires! If the currents in the two wires are antiparallel instead of parallel, it turns into a repulsive force. So that is what magnetism "really is". Except not really, because you can also use magnetism to explain away electricity if no charges are present.
You could (recklessly) extend the analogy to gravity, and consider water in two parallel pipes. Running water "shrinks" in the direction of its motion, so the gravitational field surrounding a pipe increases when the water is running. Except here the pipes have to carry water in opposite directions for this force between them to increase. So you would expect gravimagentism to work in a way that's opposite to how magnetism behaves.
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Re:Microsats flew some years ago
Well, the microsats sent out from my home state were fairly well one-purpose, one-use machines (amateur radio for webersat, rotation/attitude manipulation with tracking for the JAWSAT)- see here for an optimistic description. See here for other previous microsats. NASA's microsats, according to their page, "carry a wide range of spacecraft services including guidance, navigation and control, attitude control, propulsion, high bandwidth and complex communication functions," some of which are diagrammed on that page and its successor. With the previous story and the other ways in which NASA has exceeded expectations on almost all of their craft in mind, I think this is an idea whose time has come.
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OSSS - CAST
I used to work for these guys. They're totally serious. I worked for them as they were starting to incorporate. OSSS is a technology transfer company that was made to license and sell the technology that was developed at the Center for Aerospace Technology at Weber State University. So far there have been four launches that they've been closely associated with. The first was NuSAT, the Second was WeberSat, then they built the spaceframe for Phase 3D that's finally up, and the latest has been JAWSat. There's a couple other projects that they have built components for or performed testing on that I'm not certain whether they flew or not.