Uniformity Definition and 29 Threads

Why don't interposing objects interfere with the integrity of a field's energy between the source and its absorber? For example, the Sun's gravitational field spreads uniformly through space. If there are interposing objects like Mercury or Venus between the Sun and the Earth, why don't they...

Say two digits numbers are given like 10,20,30,55,95,85,12,13,52...etc. Is it necessary to normalize them to numbers between 0 to 1? i.e 0.10 for 10, 0.20 for 20 and so on? I've read this to be the case for K-S test. But I'm not sure for chi-square test. I'm not 100% sure on this information as...

I saw on a home improvement show some "shortcut" for measuring out a series of fixed measurements over a distance (it pertained to spacing baluster for porch railing). The contractor places a series of lines of some small incremental distance (1 or 2 inches say) on an elastic fabric band, and...

I would like to know what is the current consensus on the effect of the position of the wing relative to a tractive propeller disc's uniformity of thrust (the focus configuration would be WWII fighters).

Early in Bellan he asks us to consider a finite-temperature plasma and assume that the ion and electron densities are initially equal and spatially uniform. He approaches the problem of calculating the Debye length by considering each species of particle, σ , as being a fluid so that the...

Inflation seems to explain why distantly separated parts of the universe are at the same temperature etc. But I've never seen any reason why the different parts should have been at different temperatures in the first place. Is there a simple answer to that?

Which is higher, the breakdown voltage if the electric field is uniform or the breakdown voltage if the electric field is non-uniform ?

In the beginning there was the Big Bang...then there was plasma...then there were particles, and so on... Now, how is it possible that from a cooling plasma, randomly (?) emerged particles that are so perfectly uniform? I mean, all neutrons are exactly the same...size, mass, properties...and...

I was wondering if all particles of a given type are considered to be exactly alike.

so i am somewhat new to the theory of general relativity but in none of the papers i have read does anyone seem to explain what causes matter to attract... for example, the moon and the Earth are attracted to each other because each of them warps spacetime around themselves. these warped pockets...

Homework Statement given set C = {(x,y)|x,y are integers, x^2 + |y| <= 2} Suppose they are uniformly distributed and we pick a point completely at random, thus p(x,y)= 1/11 Homework Equations Listing it all out, R(X) = {-1,-2,0,1,2} = R(y) The Attempt at a Solution My problem is that when I...

Homework Statement While at an engineering internship, you reminisce about the similarities between gravitational fields, electric fields, and magnetic fields. You know that two infinite sheets of opposite charge can be used to create a uniform electric field (for points between the two sheets)...

Hello, I have a question on the nature of vibrations due to thermal energy. Earlier today I read this article which talked about cooling a glass string to near absolute zero using feedback from a high precision sensor. http://phys.org/news/2015-08-smallest-vibration.html what I understood from...

Hi All, I'm working on a research project that requires putting an electrode array with 4 elements into a flexible tube filled with conductive liquid. The electrode array is a series of balls, with the first being positive and the last being negative. The idea is to measure the change in...

Is the magnetic field created by a magnet equally powerful across the entire surface area of the pole?

How can velocity uniformity in dynamos and motors be explained? What's the mechanism of that happening ? I'm aware that Newton's first law is involved in that situation where an equal and opposite torque must act on the coil during its rotation so the net torque is Zero and the coil keeps...

Why is the magnetic flux density uniform at the center of the circular loop ?

Given that an Poisson arrival has occurred in an interval [0,t], where t is geometric with mean (alpha). Is it true that the arrival instant is uniform in [0,t]?

"Uniformity" of space I have a question about terminology. Suppose we have a space X with the property that: for all x, x' in X and neighborhood N of x, N is homeomorphic to some neighborhood N' of x' OR for all x, x' there exists a homeomorphism f:X→X s.t. f(x)=x'. (I believe these are...

Hello, i don't know if this is the correct place to post this question, but i have been crushing my head with something i thought about. Its making me insane. How can i know that distance is uniform across the universe? what i mean is, what guarantees me that a metre measured from A to B is...

How does the uniformity of the universe change over time? Or maybe I should say inhomogeneity versus time.

Current cosmology is based on CMBR and the idea it is remnant from the big bang, I guess we assume it's the same radiation in the whole universe. My question is how do we know the CMBR is not something local to our galaxy let's say? How do we know in another galaxy the CMBR won't be...

As far as I understand, the justifications for the uniformity of the expansion of the visible universe comes from the CMBR and from the uniformity of the red shift around us. However, I was wondering whether theoretically one could make an interferometer sensitive enough to measure this: the...

Hello, Recently,I got 2 stepper motors,one which was dismantled from a blood analyzer machine and the other one was bought from a local store. The stepper motor spec from the machine is: 12V dc 1.8 degree resolution 1A The stepper motor spec bought from the store is: 12V dc 1.8...

I have a large sample of vectors in 3-space, and I would like to how uniformly they are distributed. Ultimately I'd like to know how uniform the angular distribution as a function of magnitude. What I mean by that is that if I divide the space into spherical shells, will the vectors whose...

Pertaining to ultrasound physics, what is a "Beam Uniformity Coefficient"? How is it calculated? And why is it important? etc... I need to write couple page paper on it and I can't seem to find any information about it anywhere...Thanks.

Pertaining to ultrasound physics, what is a "Beam Uniformity Coefficient"? How is it calculated? And why is it important? etc... I need to write couple page paper on it and I can't seem to find any information about it anywhere...Thanks.

Hi. I've been trying to calculate the uniformity of a magnetic field within a loop of current. I know that the magnetic field at a point r units way from a wire carrying current is given by mu not over 2pi times I over r. I thought that what I wanted to do was choose a point distance a from the...

The question that follows assumes that there can be energy conservation in general relativity: Dark energy is said to have a uniform energy distribution in space.But how can the distribution be uniform if dark energy is created from some other energy source, and energy sources such as...