Reference is a relationship between objects in which one object designates, or acts as a means by which to connect to or link to, another object. The first object in this relation is said to refer to the second object. It is called a name for the second object. The second object, the one to which the first object refers, is called the referent of the first object. A name is usually a phrase or expression, or some other symbolic representation. Its referent may be anything – a material object, a person, an event, an activity, or an abstract concept.
References can take on many forms, including: a thought, a sensory perception that is audible (onomatopoeia), visual (text), olfactory, or tactile, emotional state, relationship with other, spacetime coordinate, symbolic or alpha-numeric, a physical object or an energy projection. In some cases, methods are used that intentionally hide the reference from some observers, as in cryptography.References feature in many spheres of human activity and knowledge, and the term adopts shades of meaning particular to the contexts in which it is used. Some of them are described in the sections below.
I am writing a (hard!) Sci-Fi novel and am considering capturing some of my research in references. I would welcome any suggestions as to online resources that pull together across all science (+ physics) disciplines the sort of subject materials I would likely need. Idea is to focus somehow...
Is there more references for how accurate is the continuum approximation to discrete sums? Perhaps more mathematical.
What I've found:
https://lonitch.github.io/Sum-to-Int/
https://arxiv.org/pdf/2102.10941.pdf
Some examples are:
Sum to integral
$$\sum_{\mathbf{k}} \to 2 \left ( \frac{L}{2...
Can you recommend papers and books to study MOND? I know that a lot of MOND theories have been ruled out by recent observations, so I don't know where to start without wasting time studying from outdated references.
I know GR from Carroll's book and cosmology from "Physical Foundations Of...
When I am citing references in beamer they are coming out as listing the author, I just want it to give a number instead. This is the code I am using, and, this is how my references and the citation are currently displaying. Many thanks in advance !
Relevant code in the document for...
I've noticed that a lot of papers these days don't include titles in their references. This grates on me, since it makes an article hard to use to survey what references are often used in a particular area. Often, what I want to do is retrieve a dozen articles in a field and compare their...
Homework Statement:: Please see below.
Relevant Equations:: Please see below.
I am trying to find a reference to a textbook or a paper that details the following time-invariance Kaluza-Klein metric:
\begin{equation}...
My question relates mainly to mechncial engineering but I guess the general principle may apply elsewhere. Up until now I have mainly been an engineer on the customer side (marine and offshore) , reviewing contractor reports, "sense checking" them and general engineering firefighting and...
I'm looking for good research papers on artificial volcanos for geonegineering. I've tried google scholar but can't seem to find any papers on them. I've heard of the SPICE project but can't find any related publications.
Summary says it all, I think. If you just want to link me to a bunch of papers, that's fine by me.
All I was able to find out on my own is that mouser and digikey have a lot of off-the-shelf voltage references they want to sell me that get about order of ##10^4## SNR at those timescales. SNR...
I'm looking for complete and detailed references on constrained Hamiltonian systems and Dirac brackets. While my main interest is electrodynamics, I would prefer a complete exposition of the theory from the ground up.
So far, my knowledge about the topic comes from books in QFT, like Weinberg...
Hi to all, I ask if somebody of the Physics community know good references for article where the author works with generalized canonical commutation relations ( I mean that the author works with ##[x,p]=ic\hbar## with ##c## a real constant instead of ##[x,p]=i\hbar##).
Thank you for the answers...
Hello everyone, I am new here. I am studying physics as a self-taught student.
I have been studying classical Lagrangian and Hamiltonian mechanics from Goldstein's book and have read that there is an additional formulation of classical mechanics in Hilbert spaces.
Is it worth studying? Do you...
Couple questions here.
1. What do you think is the best source to read about decoherence, both from an intuitive/high level pov, but also with mathematical details. I'd partially read a recommended paper by Schlosshauer a while back, is that still the bible for this?
2. If probabilities in...
US References:
https://ods.od.nih.gov/HealthInformation/Dietary_Reference_Intakes.aspx
DRI provides basic nutritional intake guidelines. There are extensive tables broken out by nutrient, by age and by gender.
Terminology:
USDA Food data central (FDC)
https://fdc.nal.usda.gov/
The EU...
I was trying to find this form of the Taylor series online:
$$\vec f(\vec x+\vec a) = \sum_{n=0}^{\infty}\frac{1}{n!}(\vec a \cdot \nabla)^n\vec f(\vec x)$$
But I can’t find it anywhere. Can someone confirm it’s validity and/or provide any links which mention it? It seems quite powerful to be...
@sysprog posted this code for a nifty swap function that uses XOR in another thread in this section.
This put me in mind of a couple of swap routines that I did awhile back: one with references and one with pointers. Unlike the example above, both routines do use a third memory location. Rather...
The problem is for a solid sphere uniformly charged with Q and radii R.
First I calculated taked ##V(\infty)=0##, giving me for :
$$
\begin{align*}
V(r)=&\frac{3Q}{8\pi\varepsilon_0 R}-\frac{Q}{8\pi\varepsilon_0 R^3}r^2\qquad\text{if $r<R$}\\
V(r)=&\frac{Q}{4\pi\varepsilon_0 r}\quad\text{if...
Hi. I am looking for some references of acceleration frame in SR, such as an accelerating rocket problem.
I have some equations regarding the time, distance, velocity measured in the Earth frame, etc. But the reference I have does not provide the derivation of those equations, so I need some...
Summary:: I need to add references for several classical electromagnetism concepts, I would like to know which books deal with these concepts.
Recently a paper about classical electromagnetism that I had submitted was rejected, among other reasons because it contained many references to...
A boat goes upstream for 3 hr 30 min and then goes downstream for 2 hr 30 min. If the speed of the current and the speed of the boat in still water are 10/3 kmph and 15/2 kmph respectively, how far from its original position is the boat now?
With reference to ground, the water travels...
So, for the end of this semester's introductory couse in General Relativity (undergrad) I have to do a project on "The analogy between the mechanical laws on a black hole and the laws of thermodynamics". I couldn't find much (at least on my own) about this particular topic in my university's...
Hey! Applying for physics PhD programs this fall and thinking about my statement. There's some really specific experiments/work being done I'm interested in. Is it acceptable if I put a few citations down? Such as: "I'm really in interested in tests of yada yada[1] and experiments such as blah...
Aloha guys, just looking for advice on some of the better pathways, courses etc. to learn how to develop and build my own website for business purposes.
Any suggestions or advice would be appreciated.
Thanks
...I feel very uncomfortable asking any of the teachers who have taught the classes I have taken so far. There was one teacher who I was considering asking to be one of my two references. I have already tried e-mailing him even though he has left the university, but he did not reply; whether it...
Hi all... I'm working on a paper and would like to reference an authoritative article that reviews or presents breakthrough data showing neurogenesis occurs in the human brain (not just animals) and perhaps also the relationship between neurogenesis and plasticity. I found a few articles that...
Hi all,
Quick question:
What do you guys use as your reference for minor head loss coefficients (k).
I'm sure those with more experience have their own database/excels of k values found over the years. I have been personally using a combination of my Hydraulic Engineering Textbook and Google...
Besides the Feynman lectures on gravitation, I'm looking for modern and complete treatments of the topic of classical gravitation as a field theory in flat space time. Any suggestion?
Hi,
i'm finishing my final degree project, it's about a new type of pallet conveyor dragged by magnets.
I know for a fact that magentic force is inversely proportional to the distance squared, and I've designed and built my prototype with that in mind.
Now I'm writing my final report and i need...
Hi All,
I need to do some work on Factor Analysis on Non-Continuous variables. I have searched the web, but found nothing of much substance. I would appreciate references on helpful sources on it. Thanks.
I am currently writing my first scientific paper, but I've never really had any proper training on the specifics of writing one particularly in citing references. The scenario is this:
Say I'm reading paper A that wrote about result X which was cited from paper B. I also want to cite result X...
I'm interested in finding out what the coefficient of friction would be for a few different materials such as:Copper on aluminum
Copper on graphite
graphite on aluminum
I'm not sure if it matters if the order is reversed such as Aluminum on copper vs copper on aluminum..
also I've seen that...
I have found that the bibliographies in my professional peer-reivewed print journals all follow the guidelines for the order as given in the standard style guides (Chicago, MLA, APA, etc.) : that is, in the alphabetical order of the surnames. However, in arXiv articles (which are not...
Hi. This is technically an assignment question, but it's not really a problem that I have to solve. It's more of an investigation so I thought this would be a more appropriate place to discuss it.
The question basically asks you to compare the thermodynamic cycle of water in a typical thermal...
I'm about to go to uni and want to develop a more professional understanding of electronics as I'm a hobbyist at the moment.
Obviously there is a lot of information online, but it always seems rather incomplete.
There also seem to be a lot of books around, but there is always the problem of...
There are many website about the apparatus of Hertz's experiments, i.e.
http://www.sparkmuseum.com/BOOK_HERTZ.HTM
http://earlyradiohistory.us/1901hz.htm
http://people.seas.harvard.edu/~jones/cscie129/nu_lectures/lecture6/hertz/Hertz_exp.html
There are many pictures showing the apparatus of...
Hi, not sure if this is the correct section so feel free to move if needed.
First time using latex to create a pdf here, having trouble getting cross-references and citations to work. They just appear in the text as question marks.
I got my bibliography to work, using Bibtex, but when using...
Homework Statement
The Observer (me) is at Inertial Frame of Reference:
1)
I am sitting at a car moving east v=30 km/h relative to earth
A bird flying east v = 10 km/h relative to earth
What is the speed of bird for me?
2)
I am sitting at a car moving east v=30 km/h relative to earth
A bird...
... literature review that we are thinking of attempting to publish?
The review will be around 20,000 words and currently I have around 16000 words and 230 references, which seems quite a lot, is there a limit to how many references are present in a published review?
This is not a thesis, but...
Hi people,
I'm having a very hard time to sort the references sequentially in my latex document. Right now my text is displayed as "blabla... [13] blabla... blabla... [6]" , so that I get [13] and [6] instead of [1] and [2].
I use bibtex and here's a simplification of the format I use...
I'm looking for introductory references to the topic of time of tunnelling decay when besides the potential barrier there is also a magnetic field present. I have found a couple of articles about the topic but they treat complicated cases in condensed matter, I'm more interested in the basic of...
I'm looking for papers or other references on DNA profiling statistics. Something comprehensive that covers the whole shebang.
I kind of troubled by some of the match probabilities being linked to "race" i.e. Caucasian.
I'm not even sure what Caucasian even means scientifically.
What happens...
Hey everyone, I am winding down of finals next week, and will be off of school for a month. I was planning on beginning Calculus 2 over winter break to get a head start, and I don't want to lose the information I've already learned. We left off on U-Substitution on some basic integrals. I was...
I've been trying to self study the section on de Rham cohomology in Guillemin and Pollack's book Differential Topology. The section is in a sense hands on: most of the results are presented as exercises scattered throughout the section, and some hints are given. I've hit a road block in a few of...
Hi all,
I'm currently applying for PhD/CDT positions, and I have one reference who is a great Professor who like has his own significant theorem and let's me know when they've come and tells me to pester him to send them. The other is an Professor in America (I'm in the UK) whose obscenely...
To simplify my question I would like to use a random example (although, the issue holds regardless of the numbers you pick). Suppose two objects collide (head-on) in one dimension. The initial parameters are as follows (units are irrelevant):
m1=1;m2=2;u1=3;u2=-4;
Also, suppose that exactly...
I'm 11 and I'm trying understand what Special Relativity is about. How many different inertial frames of reference do we have and what are they?? I know what it means.
Hi folks,
I know nothing about groups or symmetry. Could anyone recommend a good introduction that defines groups and explains their notation and operations? I am particularly interested in general, orthogonal, and unitary groups.
Thanks in advance. Kevin
I'm currently writing a paper for a small class called "Contemporary Physics" and I am writing about particle accelerators and the search for the Higgs Boson. I have a fairly good idea about how the Large Hadron Collider works, but I cannot use my own explanation alone as I need references to...