Creation Definition and 323 Threads

On March 19th at 2:20AM** http://www.badastronomy.com/bablog/2008/03/20/naked-eye-visible-grb/". In the few seconds this object flared, it put out a million, million, million times more energy than the Sun will in its entire 10 billion year lifetime. This occurred very, very far away, but it...

Is cosmology an attempt of the church to highjack science? Is this cosmology the beginning of a new breed of "science" where belief is protected and taught under the name of science?

Could you please show me some standard websites about the creation of our solar system? Thanks

Some of my friends claim that the solar creation had something to do with a supernova. I have no idea about that. Can you please explain? Thanks

control creation time of light "particles" Ok, I got this program called FileDate, which allows me to change the creation date and time of a file. Then, a question struck me: What if you were able to control the creation time of light "particles", or light photons? Don't ask me why I'm trying...

Homework Statement Homework Equations Given is c_p = \sum_{n_i} (-1)^{N_p}|...,n_p=0,...><...,n_p=1,...| c_p^{\dagger} = \sum_{n_i} (-1)^{N_p}|...,n_p=1,...><...,n_p=0,...| N_p = \sum_{i=1}^{p-1}n_i Verify \{c_p,c_q\} = \{c_p^{\dagger},c_q\} = \{c_p^{\dagger},c_q^{\dagger}\} = 0...

I'm a little bit confused in general about what an eigenstate is. So say we have something like: H|n>=hw(N+1/2)|n> |n> is the eigenket, hw(N+1/2) is the eigenvalue, but what exactly is an eigenstate? The entire question asks if there are eigenstate to the creation operator and to prove it...

Homework Statement Show that the creation of an electron-positron pair (or any particle-antiparticle pair, for that matter) by a single photon is not possible in isolation, ie, that additional mass (or radiation) must be present. (Hint: Consider the reaction at threshold, then apply...

I have a question regarding anti-matter in which ways can it be created? I got into a heated argument with someone last night. He's a first year university student and he was trying to tell me that we can create it by accelerating particles to the speed of light and making them collide. I know...

Again Hello I’ve been reading threads on here about what is physical and matter and such like that, also about a possible creator be it god or some alien being of some sort. So this thread is sort of a mixture…not to mention a bit matrix-ee. I’ve been thinking about how unreliable our senses...

How did they experimentally verify that there is pair creation and annihilation in the vacuum? What kind of particles usually pops in and out of the vacuum?

"Creation" Museum... I couldn't believe this story when I saw it... http://www.ctv.ca/servlet/ArticleNews/story/CTVNews/20070528/creation_museum/20070528?hub=TopStories

Mmmmm... why only steam is used in a steam ejector for creating vacuum and not anything like air or other inert gases...:confused:

Hi again, I was doing some experiments on heat of combustion of various fuels and determine which fuel is better by creating a calorimeter. And its simple and straight forward but i started thinking what happens to the water created by burning the fuel, as an example i was doing methanol and...

Does QM tell us that photons are actually electrons and positrons goign through a cycle of annilation and creation?

Hi! A question from a beginner in quantum physics... If the quantum field randomly produces an electron-positron pair, and the pair annhialate, a gamma ray photon is produced. The net result of this process is gamma ray photons coming out of the quantum field at random. This means the...

Hi! My exams are coming up soon and I'm revising some of the notions of electromagnetism. What intrigues me is the way electric field is created/distributed within a wire. I've been thinking about it for some time and have come up with the following "hypothesis", idea: When a conducting wire...

Homework Statement The aim in a particle scattering event is to let an electron and a positron collide and annihilate each other to form a Z-particle. The (rest) masses of these particles are given by: m_e- c^2 = m_e+ c^2 = 0.511 MeV m_Z c^2 = 91.187GeV There are two ways the experiment...

Dirac's theory of the electron predicted that there were identical particles of equal mass but of negative energy. He appealed to the Pauli exclusion principle and proposed that there was a negative energy 'sea' of electrons that was full up to -2mc^2 in order to answer critics that positive...

Hey, I am calculating the expectation value of the position x. I have the wave function psi(x) = |1> + |2> so I use the equation <x> = <psi|(a+a^+|psi> to calculate the mean value. So I get (<1| + <2|)(a+a^+)(|1> + |2>) which I reduce to <1|a|1> + <1|a|2> + <2|a|1> +...

Ok so I mixed alum (aluminium potassium sulfate... I think), flower,and cornstarch in a 1:1:1 ratio, and put that in a covered pot and heated it till it produced no more smoke/fumes. This was an attempt to make a rapidly oxidizing powder in air. It was very blind science, I am sorry to say. It...

In beta decay, an antibuetrino or an positron is emitted from the nucleus. how is this possible? how can antimatter come directly from matter? This is pizzling...:confused:

"Esoteric" forum creation? Hello, although this is a scientific forum, i would like to know your opinion about creating a sub-forum about "esoterism" (paranormal phenomenon and all that ) :rolleyes: :rolleyes: to discuss these subjects. o:)

One of the great theories of physics is the theory of special relativity. This theory is based on two concepts: - 1. The speed of light is constant. 2. The laws of physics are the same in any inertial frame, regardless of position or velocity Given the validity of these concepts...

Can an e-p pair be created simply from field interactions rather than brute force collisions of atomic nuclei?

I've posted a similar question to the high energy forum. As I understand it, LEDs emit photons when electrons and holes have sufficient energy to cross a particular "well". I'm sure this explanation is lacking in many key ways. Why can't we "tune" the gap to create electron-positron pairs and...

Ask for Help: Is this operator reasonable in physics? Is this kind of the operator is reasonable in physical sense? $\sum\limits_{\bf k_x,k_y} \alpha k_x c^\dag_{k_x,k_y}c_{k_x,k_y}$ where $\alpha$ is contant, k_x , k_y is wavevector along the x and y direction.

If we would get to 99,9...% c will we become a black hole?

Hello, I just have a quick question, if people would know the exact mechanics of the universe, by all means, would it be possible to also derive the exact theory of creation of the universe? I think no, but I'd like to hear something from you, as you're more educated in this. Thanks,

Hello, Haven't been here in a while. Does the Linear Combination of Atomic Orbitals (LCAO) method of developing a basis set imply tight-binding ? Is there a way of using this basis set for not so tigtly bound (there is appreciable overlap) atomic orbitals and still maintain orthagonality...

I'm interested in synthesizing complex waveforms using sine waves. I know that when two sine waves which differ slightly in frequency from one another are summed, amplitude modulation (AKA "beating") with a frequency equal to the difference in frequency between the two sine waves ensues. This...

I am curious as to whether quantum particle-pair creation could be responsible for cosmological inflation. Question 1: Is there any theory about quantum particle-pair creation effect on local space-time? Obviously, where a particle exists there is gravitation, where no particle exists there...

I was wondering if Dark Energy, and Dark Matter, could be a product of quantum field particle-pair production? If you know of any links or papers supporting or invalidating my thoughts below, I'd love to hear about them! Dark Energy makes up 73% of the universe, Dark Matter makes up 23% of...

Has anyone had any experience with this? I'm interested in what the programming interface is like and what level of stuff you can make.

http://www.flooble.com/fun/genesis.php?page=1" To: General Director Jehovah From: Gabriel, Marketing Director The market research conducted by our department for the Genesis project, shows that systems of the following configuration will generate the highest level of consumer...

In Chapter 6 of M. Kaku's book (QFT), he wrote (p184) "...by rotating the diagram around, we can convert bremsstrahlung into pair creation." Bremsstrahlung, as far as I know, involves atoms. Does this mean that when bremsstrahlung with >1.2 MeV strikes an atom we will get an electron and a...

All right, so what I don't understand about the big bang theory is that when it describes the creation of atoms, does it mean that the particles were already in existence and the explosin only made the particles come together? or were the particles actually created by the big bang? If the...

Hi, I am wondering when you want to burn a film or documentary to a dvd to watch on your home tv theatre, how do you go about it. I have aload of science documentaries that I want to burn to dvd and when I do my dvd player downstairs cannot read the dvd cd. Why is this? Do I have to convert...

After an abortive start in the new IR Forum I am beginning a new thread on the published theory of Self Creation Cosmology. There has already been many posts on the subject in PF and I apologise for any repetition, but having been asked to post it here in A&C I here make a clean start! The...

I was reading some stuff about the big bang and about the singularity. When the big bang happens, is a whole lot of matter just created? And, Are Photons counted as matter? Thanks

SpaceTiger has created a very valuable thread on Mainstream Cosmology. For good scientific practice it is important to compare standard theories with testable alternatives, however ST's thread is not the place to do it. The theory of Self Creation Cosmology (SCC) presents itself as such a...

Hi, I'm studying my astronomy course at the moment and i have question about the r- and s-process. As I understand it, in the r-process, the time between capturing two neutrons is shorter than the averge beta decay half life, right? So I'm guessing there have to be a lot of neutrons around for...

"Creation of Black Hole Detected" http://www.space.com/scienceastronomy/050509_blackhole_birth.html

http://www.cnn.com/2005/EDUCATION/05/05/evolution.hearings.reut/ more... Intelligent Design is a neat little trick developed by creationists that uses the scientific method to present a possible theory that implies a creator.

just a simple question: do u think matter can be created? nowadays some scientists do believe that and what's your reason?

My Question has to do with the apparent creation of energy; Say if one were to some how find a large rock in deep space (where no other gravitational fields existed) and bring it into the proximity of a large mass, say a star, It would be safe to say that it would accelerate towards this...

what is the average size of a domain? and how are "permanent" magnets made? thanks, erin.

Ok so if we put a lot of particles into a glass and give it a good shake, a form will come forth, whatever it is. But will that form have a greater purpose than just being a muddled blob of particles? Let me see if I can explain it. What's the difference between an ant, and a stone? The...

Isn't possible to delete and remove columns after a table has been created? Rows works just fine but columns don't...

Most religious texts posit that our universe is a special creation. But if our universe is actually a quantum superposition of all possible universes, then no particular universe would be preferred over another. There would be a symmetry among all possible universes. There can be no no...