Resolution Definition and 291 Threads

I have been thinking about the logic of resolution of a main force into its component forces. Up to my stage i have just come across with the 2-dimension force which take x-axis and y-axis as their basis. So if they take y and x-axis as the basis for the components of a single force, supposedly...

I worked through a simple twin paradox problem, and I think I have the correct solution. However, I wanted to confirm that my numbers are correct. There is nothing fancy about the solution, but it resolves the "paradox" completely for me. Every other resolution I have looked at either leaves...

For a given pinhole size in a camera, and camera size, what would be the optimal pixel size to get the maximum resolution at maximum light intensity? i.e. the larger the hole, the more light enters through it, but eventually the sharpness would drop below the resolution. Conversely, the...

Supposing a perfect optical instrument, what is the best angular resolution possible when observing distant stars?

I have done a lab on resolution power of a telescope. a wire gauze was placed infront of sodium lamp and i used a telescope with adjustable vertical slit to look at it. i was bit confused with the theory .. 1) I was told to record the slit width when the vertical wires just cease to be seen...

Hi all I have measured the resonance frequency of a resonator as a function of time by mean of a Laser-Doppler vibrometer and a frequency counter. In this measurement there are some fluctuations in the measured frequency as time goes by. My question is: How do I determine the resolution of...

Hey all. I know that the maximum resolution of a telescope directly relates to the size of the aperture and the wavelength of the light. What I'm wondering is what would happen if you took "pieces" of a much larger mirror from opposite edges and just used those pieces. Pretty much what this...

I'm looking for the answers ,AKA resolution of calculus by James stewart from 4th edition. Please, if this is the wrong area, transfer the topic, but please don't delet it. I'm looking for sometime this answers...thanks in advance, Jonas.

Homework Statement How far away can a human eye distinguish two car headlights 2.1 m apart? Consider only diffraction effects and assume an eye pupil diameter of 5.0 mm and a wavelength of 550 nm. What is the minimum angular separation an eye could resolve when viewing two stars, considering...

Homework Statement Suppose that you wish to construct a telescope that can resolve features 7.0 km across on the Moon, 384,000 km away. You have a 2.2 m-focal-length objective lens whose diameter is 10.5 cm. What focal-length eyepiece is needed if your eye can resolve objects 0.10 mm apart...

let me first donate a(A,B) is the acceleration of A relative to B Observer 2 and a subject A with mass m are falling down from a building Observer 1 is standing on the ground to observe the motion of these two objects Ignore the air resistance In observer 1,he sees the force acting on A...

Hi everybody, i am having difficulties to write a program using only MATLAB to solve the Mrtd SCHEME...that is solving the maxwell equations...can anyone please help me

Homework Statement Electrons are accelerated by 2450 V in an electron microscope. What is the maximum possible resolution? Me=9.11 x 10^-31kg and e= 1.60 x 10^-19 C Homework Equations I'm not so sure which equations to use for this question.. maybe the Planck's formula? λ=h/p...

Homework Statement A force which is at an angle θ to the horizontal (not being 90°) has two components Fx = FCosθ and Fy = Fsinθ along the x and y direction. However, when working out problems regarding objects on an incline, the horizontal (parallel to the slope) component of Normal force...

How do I prove that Ʃ\ket{ei} \bra{ei} = I

According to Faynman Lectures on physics in the chapter of geometrical vol1 ch27, the general rule for the resolution on any optical instrument is this: Two different point sources can be resolved only if one source is focused at such a point that the times for...

Homework Statement Revered Members, Kindly see my attachments. Homework Equations This is Atwood machine dealing with motion on a frictionless inclined plane. The Attempt at a Solution To better visualize the forces involved, i isolated m1 and m2 and drawn free body diagrams...

Homework Statement Revered members, i have attached two images which depicts obtaining an expression for velocity and acceleration of particle executing SHM. Homework Equations In the first attachment, velocity component vcos\Theta is parallel to vertical diameter of the circle and...

Does anybody know of a good reference for determining the required diameter of an Earth observing telescope's primary mirror? I am trying to find determine a rough estimate for a design I am working on. So far I have found the equation Sin\theta = 1.220 \lambda/D for angular resolution and...

Should the US veto a UN Security Council Resolution for the creation of a Palestinian State? M. Abbas, the President of the Palestinian Authority (PA), plans to petition the UN Security Council on September 20 for the recognition of Palestine as a full UN member state. The US has already...

Hi Im comparing PET scans and MRI scans and I've noticed that MRI s spatial resolution is 0.3-1mm while PET scans have a spatial resolution much larger, around 5-7mm. I was just wondering how these figures are calculated. I've looked up some formulae and all I could find was wikipedia...

I need your help, guys. The link below is to the paper, that is, in my opinion, contains resolution of one of the most interesting problems of math logic and set theory – Russell’s paradox. As Cantor’s and Russell’s paradoxes is a “paired” problem you will find resolution of both in it...

The U.S. owes China around 2 trillion dollars. How might patent violations and industrial espionage by China (and the U.S.) figure in modifying this debt? In that regard it seems to me that China is undermining the U.S. economy by being the stealthiest of thieves. Can the debt be further...

Homework Statement Prove by both natural deduction and by resolution ((X \Rightarrow ¬Y)\vee(¬X\RightarrowY))\Rightarrow(¬(X\wedgeY)\wedge¬(¬X\wedge¬Y))Homework Equations The Attempt at a Solution as far as natural deduction on this goes i have no idea since there is no ' I- ' looking symbol so...

I've done plenty of imaging performance testing on a variety of systems, from millimeter wave through UV. Until very recently, such testing required expensive and specialized equipment. Now, with digital imaging (at least in the visible), you can perform the same type of characterization on your...

Homework Statement The airspeed of a small plane is 200 km/h. The wind speed is 50.0 km/h [E]. Determine the velocity of the plane relative to the ground if the pilot keeps the plane pointing in each of the following directions. a) East (250 km/h [E] ) b) West (150 km/h [W] ) c) North (206...

I have a question about digital to analog converters. Lets say I am given a R-2R ladder type DAC with 7 "wrungs". This implies that I have 2^7 = 128 bits. Now if I want to represent an equivalent decimal resolution of that DAC, how do I go about doing that? Let's say the input...

How to find the resolution of a Michelson interferometer ?

Homework Statement Determining the resolution for a new PIPS (Passivated Implanted Planar Silicon) detector. I've done this earlier for a Ge detector, but that was easy because the two peaks of the Co-60 are far apart. For this measurement we use the normal Am-241 source which has two...

Homework Statement A 3.1 cm--tall object is 26 cm to the left of a lens with a focal length of 13 cm. A second lens with a focal length of 8.0 cm is 42 cm to the right of the first lens. Homework Equations 1/s + 1/s' =1/f M=-s'/s and I'll have to multiply the two M's together to get the...

Homework Statement Snoopy is running to his doghouse at 3.0 m/s [N 15° E] for 35 s. Charlie has a bone and calls his dog back. Snoopy immediately turns around and runs towards Charlie at 4.5 m/s [S 45° W] for 30 s. Find Snoopy's displacement.Homework Equations dt = d1 + d2 d1=d1x + d1y & d2=d2x...

Hi there, I am doing some research online trying to find a good site that explains to me how sensor resolution works. I have a very vague understanding right now and I was hoping someone could go through it with me. I'll give a bit of background as to the task I have. I have a 4 quadrant...

Hi Say I have a peak of about 100 MHz, and my apparature has a resolution of about Δλ 0.5 nm. How can I find out whether I will see the peak or not?

Every so often I read articles about how you can save a lot of money simply by negotiating your bills down. One even noted how it can be the perfect new years "resolution". While it's not a resolution per say, the idea is when the first of the year comes around, call all of your cable/cell/phone...

I need help with the following question on Resolution in FOL. The custom officials searched everyone who entered this country who was not a VIP. Some of the drug pushers entered this country and they were only searched by drug pushers. No drug pushers was a VIP. Let E(x) mean ”x entered...

So I have this graphics card and I don't understand why its specs say "no" for 1080p support. http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=5274435&CatId=3669 It says max resolution 2560x1600 and 1080p is only 1920x1080. I use a 32" LCD for my monitor and my...

Homework Statement In order to increase resolution of the diffraction gratings we can use them in higher orders of diffraction. What is the practical limit on using very high orders of diffraction? Homework Equations R = \lambda / \Delta\lambda = Nm The Attempt at a Solution I...

My main issue with this problem is the formula and how to derive it. Homework Statement The Hubble Space Telescope has a resolution of about 0.05 arc second. What is the smallest object it could see on the surface of the Moon? Give your answer in metres. Homework Equations I tried to...

1. Hi I am writing a program to calculate 3D vectors for visualization and I am testing textbook problems such as: "If vector c forms an obtuse angle with the 0Y-axis and is orthogonal to both vectors a = 3i + 2j + 2k and b = 18i - 22j - 5k Find the components of c if its norm...

I've been around and around on the net, and had two neuro-physiologists repeatedly dodge the question, so I open it to the wider population... When one speaks of learning one uses the phrase "adjusting synaptic weights", meaning (I presume) changing the strength of a connection between two...

Hi, I have developed a model that demonstrates the filling of atomic orbitals but need some 'constructive' criticism on its content. How do I go about that? I currently have it in a pdf format. Can anyone help?

Why are short wavelengths (of e.m. radiation say) required for observing the location of a small particle? Classically, I could imagine sending a wave train of light (or a photon) of different frequencies onto an atom in free space. Providing the electrons in the energy levels of the atom can...

May seem like a bizarre question but I was wondering what the maximum possible resolution of a scanned A4 image would be. A4 paper is 0.297m x 0.21m, average resolution of light is 200nm. So I get, (0.297m / 200x10^-9m) x (0.21m / 200x10^-9m) = 1.56 terapixels Is this about right...

Here are two exercises: 1. ) The proton radius is 0.8fm. What energy electron beam do you need for this resolution, if the target is liquid H2? 2.) A pion radius is 0,65fm. What energy pion beam do you need for this resolution by scattering on the electrons of a stationary target(pi-e...

Hi, I'm trying to find a high resolution ccd camera that can be used to take PHOTOGRAPHS to inspect the surfaces of metal cavities. It has to be compact and oblong to fit into a tube so it can be inserted into a cavity. I'm looking for something very much similar to this shape...

Hi there. I was wondering recently about the Fletcher's Paradox, and Peter Lynds' solution - the idea that time can't truly be measured in individual instants. Now, I'm not actually a physicist - just a science fiction writer. But has anyone proposed the alternate solution that motion is an...

Homework Statement hey, we just had our engineering math exam and one of the questions wanted us to resolve 3 force vectors (find the magnitude). I don't remember the exact values but it was something like F_1=1i-j+2k F_2=3i+j+3k and F_3=-2i+j+k all i could think to do was add up the i j and...

Hi, Can anyone help to explain the term of resolution in FTIR spectrocopy machine and... 1) If a sample A show a band centered 1650cm-1 and after some modify, the sample A show a band centered at 1652cm-1, can we consider the sample change in its molecular structure because it has a band...

Homework Statement A radio telescope observes two stars orbiting each other, using radio waves of wavelength 20.0 cm. The stars are 10^7m away from the Earth. The telescope, which has a diameter of 20.0km, can just resolve the two stars. What is the distance between the two stars?Homework...

Just two days ago I attended a lecture held by a professor at UiO who discussed the need to resolve the wave/particle duality model of light. He was unsatisfied by the deterministic approach to the problem (Bohr's principle). In general, he viewed the photon model as poorly defined and poorly...