Scientific Definition and 550 Threads

Is there a compendium of peer-reviewed journals that have been shown to be wrong? I've heard of scientific journals that only have required two reviewers. How often does rubbish get by; not just typos and simple mistakes, but fundamentally unsound rubbish? Is there a remedy process for...

Homework Statement PV = PMT *1-(1+i)^-n / i PV = 225 * 1- (1+.0055)^-42 / .005 PV = 8417.37 How did they get this. how do you use a negative exponent on a scientific calculator. Homework Equations The Attempt at a Solution

Hello, everyone. I've been reading this site off and on for a few weeks, and I'd like to ask you a few questions, if you don't mind. I'm a 30 year old software developer with a BS in computer science (and a mostly completed MS that I really regret not finishing). I generally enjoy my work...

Say I discovered something very important scientific. Who exactly would I call to tell them about this? Or go to?

http://en.wikipedia.org/wiki/Argumentum_ad_populum Just like all people believing in God does not make God exist, All scientists agreeing on a scientific theory or an explanation for some unexplained phenomena , does not mean the scientific theory or the explanation reflect reality. My...

Hi. I have high functioning autism and like many other people on the spectrum I think predominantly in pictures and that's how I learn scientific concepts. Every concept I learn I represent it with a picture. Unfortunately a lot of the books on chemistry in particular (physics and biology I have...

I would like to ask for scientific clarification on a less commented part of Iran's nuclear technology preparations. It is fine for us to do the politics here as well, but that is also discussed in lots of places. This site is particularly suitable for scientific/technological background you...

Hello, I hope someone can shine some light on the following questions: The std scientific method (observation, hypothesis, experimental verification or falsification) assumes that the phenomenon being studied happens (is observable) within the time span of human experiment, let's say a human...

Here's a thought, often in history someone will find a detail that doesn't fit some theory, then will come up with a better theory which explains the evidence better than the old one (ex. Einstein did to Newton). Before Science, there were groups who said rationalism was best, and others who...

This question has to do with some annoying anomaly when expressing in scientific notation whole numbers that are multiples of powers of 10. For instance, 2000 is usually written in scientific notation as 2x10^3, implying that the original number has 1 significant digit. On the other hand, 2025...

Hello, I was shown these forums by a friend who studies Astrophysics and he suggested me that I could present my little science project here. I hope that this area is OK for that, because I assume that my project is not as advanced (i.e. that it already delivered results), that it could go...

This may be the wrong place to put this thread, but it appeared to be the best option. Does anyone know of an easier way to set up physics equations online other then finding the keystroke or inserting a symbol? It's a pain to hold ALT on my mac and hit every key trying to find an integral...

I would like to hear from you guys, ideas about a program that can be handy, for a scientist or a student, in the field of chemistry, physics or mathematics. I want to create something which does not exist on the market but can be helpful for many. I am a computer scientist currently...

I plan on finishing up a B.Sc. in math with a minor in physics in the next few years. Afterward I would like to get a job for a few years and then continue in graduate school learning more about scientific computing and the like. My question is what sorts of jobs are available in scientific...

Does anyone have a link or some source for all of the scientific symbols used in equations like this one E=mc2, I know that one doesn't really have any sybols in but I mean like the really long and complicated ones (((THIS IS NOT HOMEWORK!)))

I have a question regarding the process of publishing. Is the preferred method to first submit to a pre-press (such as arxiv) or to directly send into a journal for review. If submitting to arxiv, how does one find a suitable endorser? Apparently one can find endorsers by reviewing topical...

i need to find a way to control the syringe pump in my lab so that i can control the flow rate in real time from the computer, ideally from a simple dial i scale up or down. the pump can connect to the computer using a rs-232 port and someone suggested to me that labview would be the easiest...

I'm doing a paper on how the scientific method in it's current form came to be. I've found a lot of interesting websites already, but not many that I would feel comfortable using as a source. Could anyone point me in the direction of some good books or trustworthy websites that give a good...

I'm currently taking a course called 'the scientific revolution' and I have to write a paper (~4500 words) for it. The subject can be pretty broad, it doesn't neccesarily have to do with the scientific revolution, there's some room for improvisation. Now I was thinking, what about a paper that...

Hi I’m a 14 year old student and my school is having a science competition for the students in the grades above me, but i thought I would enter because I love scientific competitions. Basically the competition is a hypothetical scenario where you have a group of scientists/engineers and...

When the numbers on the axis are too small or too big, I would like to use scientific notation for that axes in mathematica... Anyone know how to do it... I have googles it and find no useful things. Kind of frustrated.

I have got some holiday homework from school and have to make a file on anyone Scientific Principle, i did not get what they meant. Can u list out some scientific principles which won't take much time for the project.

Dear Group, This new paper by two famous Princeton mathematicians named J.H. Conway and S. Kochen examines a particular case in quantum mechanics (QM) and then proves a new theorem which shows that if humans can be said to have "free will" then so do elementary physical particles. They...

H_0:God exists. IMO this can't be a scientific hypothesis, because it can't be found evidence against it. How about H_0: God does not exist. Is this a scientific hypothesis? One can certainly go out and try to disprove the hypothesis, but what should one look for? I mean, as long as...

In the stupid quest to know everything about a subject, i just wonder if there exist databases out there that include all the existing journals to search for an specific topic. I currently use Science Direct, but that is restricted only to Elsevier journals. For example, it does not include...

i am looking to build my own testing apparatus to do some crude thermal conductivity test experiments on various motor oils. 1. anyone have any links to such methods or apparatus? 2. how does one take into account fluid convection while trying to determine the TC of a fluid? my initial...

Up to the present, what concept formulated here on Physics Forums do you consider the most outstanding?

Dear PFers, I remember once reading of an article on scientific honesty, maybe it was in SciAm. Individuals passionate with science, making up a significant portion of the research community, may picture challenge as stimulating or even exciting. It is a great deal of pleasure when you...

I find it funny when various pundits and news reporters in the media constantly complained that the United states is falling behind in new developments in science and technology , and which to a certain extent, there is some validity to this claim , observing that the scientific literacy in the...

I am a freshman at a university (I'm 16 years old- skipped 2 grades in school) and I'm planning to major in physics. After reading more specialized books in the library, and having some discussions with professors I have come up with a couple ideas that I would like to develop further and...

Hi. I was wondering if anyone would share with me some insight about what calculator I should purchase? I'm a returning student in the fall, majoring in physics with engineering option. It's been so long since I've been in school though that I may end up having to take a trig/algebra II class...

Is the concept of god frowned upon?.

I appreciate this isn't a physics question but I thought maybe someone would have experience in acquiring dusty old books that seem impossible to track down.. I am looking for 'Crystallization of Biological Macromolecules' by A McPherson, I have searched Bristol, Exeter, Bath & Cambridge...

I was wondering if there is any solid scientific explanation for the very recent temperature rise in the western-coast of the United States. I live in Arizona, and it's been over 75 degrees for the past week or so. Is this a complete meteorological anomaly? Or does science have some sort of...

Homework Statement I know there's the following sections: Abstract Introduction Method Used Results Data analysis Discussion Conclusion Awknowledgement References But when there are two areas of the experiment to be investigated, say measuring the wavelength of light for...

If anyone here cold scientifically explain the extremely unusual number of occurances of natural disasters, and virus outbreaks more than any other point in history, and not link it to the foreshadowing of some malevolent paranormal force or the book of revelations/apocalypse. I understand the...

http://abcnews.go.com/Technology/YearInReview/story?id=6498591&page=1

Recently I've gained interest in reading the classical works of mathematicians and physicists and came to the realization that knowing Latin would be of great use. Is it worth the effort to learn the basics necessary to comprehend for example Gauss' works, or might I just as well get the...

Hi all, I want ask about any magazine related to Math? like scientific american magazine.

Hi all, I want ask about any magazine related to electronics and robots like scientific american magazine and make magazine

7 × 10^6 divided by a × 10^n is equal to 8.75 × 10^9 a is greater or equal to 1 but less than 10. n is an integer. Find the value of a and the value of n. I do not really understand how to separate the a and n, and thus find a value for each of them. Some help would be highly...

Criticising the scientific method ! Hi all Quoting a part of prof. Michael Shermer's book: Why people believe weird things?, about some problems of scientific thinking, made me a bit confused. "Let us suppose that an ichthyologist is exploring the life of the ocean. He casts a net into the...

Homework Statement The Shadow cast by a vertical pillar in Alexandria at noon during the summer solstice is found to be 1/8 the height of the pillar. The distance between Alexandria and Syene is 1/8 the Earth's radius. Is there a geometric connection between these two 1-to-8 ratios...

Homework Statement Im doing a philosophy, history and politics of science subject and the question is whether gravity was waiting to be discovered or was it an intellectual construct particular to the 17th century and Newton. Homework Equations The Attempt at a Solution I'm...

I looking into maybe a subscription of Nature or Science...but they are like $200 a year...Any cheaper way to get them? i am only a poor student :(

I was sitting in my kitchen this morning at 8:10am eating breakfast with my mom and sister present in the room when a glowing yellow & orange light appeared directly over the counter table across the room for no more than 2sec. At this same instance our electric garage door started going haywire...

The problem is attached... It asks for the answer to be shown in the form a,k. Whereas a is the base number and k is the exponent, with using the form of scientific notation.The answer I came up with was 9.782701624,1. I was told it's wrong and I don't know what the real answer would be then...

Hello, I've a program in FORTRAN which I need to convert to C#, there's an assignment statement like this: FC=10.e6 What exactly does it mean? Is it 10*10^6? or 10.000000? Do you have some tips to convert the FORTRAN program to any modern language (C#, JAVA, C/C++) ? Thank You

I am taking a project this year. As the title suggests this project is a maths project but I was wondering if anyone can direct me to some science field in which I could use stochastic models. I have very limited knowladge in science so something theoretical would be nice. Any books would be...

Hi, I wish to plot a 3d surface but as of now have not been able to! I wish to plot z=f(x,y)=[x²+y²-1]^1/2 restricted to the domain: dom(f) = {(x,y)|=1 ≤ x² + y² ≤5} Any step by step instructions would be greatly appreciated! Thanks in advance!