What is Core: Definition and 484 Discussions

Intel Core are streamlined midrange consumer, workstation and enthusiast computers central processing units (CPU) marketed by Intel Corporation. These processors displaced the existing mid- to high-end Pentium processors at the time of their introduction, moving the Pentium to the entry level. Identical or more capable versions of Core processors are also sold as Xeon processors for the server and workstation markets.
As of June 2017, the lineup of Core processors includes the Intel Core i3, Intel Core i5, Intel Core i7, and Intel Core i9, along with the X-series of Intel Core CPUs.

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  1. O

    Difference b/w Dual core and core 2 duo

    I have always confusion b/w these two processor what's the major difference b/w these technology wise Thanks
  2. B

    Electromagnet coil core to yoke ratio?

    I'm building pairs of coils with standard core heights and diameters and linking each pair with a yoke. The magnets all run at 6V DC with windings of 24 AWG magnet wire in 6/8/10 layers. Is there a ratio of coil core mass to yoke mass for maximum efficiency? (shown below)
  3. A

    Star Model - Isothermal Core

    Homework Statement Let’s make an idealized star model with two parts: an isothermal helium core, and pure hydrogen layers outside the core. The core represents the part where hydrogen has already been burned. Mathematically this represents the simplest model that might resemble a...
  4. A

    What are the cooling requirements for a gas core reactor?

    If we were able to build a gas core reactor, how much heat would need to be dissapated? I bring this up because traditional solid core reactors require lots of heat to be pumped away (do you know the exact number?) to keep the core for melting, but since a gas core is already much hotter...
  5. neduet

    Understanding Transformer Core Loss under Increasing Load on Secondary

    1.If we increasing load on secondary of transformer core loss is same or not ? 2.what is the most common lamination thickness of transformer core? 3.some kind a paper we used in winding for insulation what is the name of this material?
  6. M

    Using a magnetic core for an electromagnet

    Hi, I would like to know what would happen if you used a permanent magnet for the core of an electromagnet, instead of the standard ferromagnetic core? Can you increase the magnetic field strength of the permanent magnet by putting current through the coil? Also, could you effectively...
  7. Pythagorean

    Can Ferromagnetism Be Proven in Trapped Air?

    Is it possible to saturate an air core? Would you have to trap the air for this to work. Are domains a meaningless concept in a fluid, even if it's trapped? (i.e. it can still circulate in it's 'prison').
  8. M

    Is a Core Temperature of 3.14*(10^7) K Feasible for a 50 Solar Mass Star?

    I'm wondering how realistic it is for a 50 solar mass star to have a core temperature of 3.14*(10^7) K. This isn't much greater than the core temperature of the sun, which is 1.5*(10^7) K. Have I made some huge miscalculation, or does this seem feasible? Thanks.
  9. I

    Problem with air core transformer

    I have two inductors, one as a primary and the other as the secondary. I am trying to transfer the radio signal from the primary inductor to the secondary inductor. But I am getting no signal on the secondary inductor. The radio signal is a voltage signal with very little current. The inductors...
  10. R

    Calculating wire lenght for an air core inductor

    I would like to build an air coil that will create a flux field, which will in turn induce a closed loop coil, that results in an equal and opposite force. The power source is an array of PV cells hooked up in series or parallel which ever will give the air coil the greatest/strongest magnetic...
  11. J

    Equation for Permeability of an electromagnetic core

    well i hope I am posting this in the right section, I am new here. im making some electromagnets for a personal project I am doing but i want to get all the calculations done before i get all the materials and actually build the thing. i need to know what/if there is an equation to find...
  12. S

    Sending a probe to the Earth's core?

    Will we ever be able to actually send a probe to the Earth's core?
  13. J

    Where Will the Ball Land After Passing Through Earth's Core?

    Hey i m a newbie suppose i drill a hole that passes through the centre of Earth and reaches the other point on earth now i drop a ball in this hole where wud it land??
  14. J

    Rare earth magnet for solenoid core

    Hi, I am trying to design a simple water valve that opens a plug in a small water reservoir until its empty. So far I have a solenoid coil wound around a hollow core plastic pipe with a cylindrical rare Earth magnet inserted halfway into the pipe with a 'plug' attached to the top of the other...
  15. D

    Schools Peace Core+ Physics Undergrad = ? Grad school?

    Peace Core+ Physics Undergrad = ? Grad school? So, I am two years younger than the rest of my undergraduate peers. I will graduate from undergrad at age 19, hopefully with a decent GPA and high GRE scores (I usually do well on standardized tests), as well as research experience starting from...
  16. R

    The pressures at the center of a nuke are greater than in the earth's core?

    Wikipedia has an Ivy Mike level nuke at 530 TPa, and the core pressure is at 380 GPa. That's a factor of over 1000 times. I'm wondering whether these are exactly comparable, since the pressure at the core is constant, whereas in a nuke, it's relatively brief. A multi walled carbon nanotube...
  17. R

    Using PV cells to energize an air core coil

    I'm using PV cells to energize an air core coil. Is there a method in which I can determine the maximum length of 32 gauge magnetic wire to use, so that I don't use too few windings and burn the coil out or too many windings limiting its' potential. I'll be using 2 PV cells that are each rated...
  18. F

    How is the core of the Earth kept hot?

    I know that the mantel of the Earth is kept hot by radioactivity, but is this also true for the core?
  19. T

    Will an Intel Core i7 920 be faster than this CPU?

    Will an entrance level Intel Core I7 920 be faster than a Core 2 Quad Q9400? Just asking...
  20. S

    Exploring Core and Segment Signals in Gamma-ray Detectors

    Hello all, lets think we have a segmented gamma-ray detector. when a gamma-ray interacts several segment of the detector, it deposits energies in each of them. And we can get a energy spectrum due to this gamma-ray. is the signal from core of the detector or from segments? what is the meaning...
  21. P

    Why Require Graduate Core Classes in Math?

    This is a bit of an odd question, but it's been bothering me for a while. The graduate sequences at top universities (Algebra, Geometry/Topology, Analysis) have always been rather esoteric in nature. Most students entering top universities have a rather strong background in these topics and...
  22. B

    Radius of core, using densities

    Homework Statement A planet with R=4000km and \rhoavg=5g/cm3. The planet is made of quartz all the way to the core, which is made of iron. The densities of quart and iron are \rhoquartz=2.65g/cm3 and \rhoiron=7.874g/cm3. Calculate the radius of the core. Homework Equations \rho=M/V...
  23. M

    Core of matrix (pure translatio)

    Hello all, I have problem with name of type of matrix. The definition is next: The core of matrix A is collection of vectors x, for which is valid Ax=0. Does anybody know the name of this type in english language. Example will be also good. Thank You
  24. C

    Electromagnet and core permeability

    A magnet is attached (or over a small airgap) to the end of an electromagnet (EM) with a steel core, then the EM is pulsed with just enough juice to get the magnet to drop off. (just negating the attraction) Which will require less energy input to get it to drop off? 1) a high permeability...
  25. N

    Earth's core (what if it burned out?)

    Hi, i have a question about Earth's core. How does it keep on going (endless)? i mean will it last forever, and if it doesn't what will happen when it burns out? Do the other planets in the solar system have cores? Question 2: if we managed to get carbon dioxide to heat up mars, could it be...
  26. C

    Premium electromagnet core material

    I'm trying to get feedback on electromagnet design and specifically sourcing premium core material for a pulse coil electromagnet. I have seen this question asked a few times on this forum, but doesn't appear to have really been answered. What is THE BEST core material and where to source...
  27. R

    AC air core coil of 0.2 T 100KHZ to 100MHZ

    I am a student at Colorado State. Can someone in this forum help me with building an AC coil either an air core coil or C-frame iron or steel with so many turns of copper wire that has a maximum magnetic field of 0.2 T and its frequency range is 100KHZ to 100MHZ. I am searching on the internet...
  28. P

    Solenoid with a magnetic core

    1. Homework Statement A long solenoid with 70.0 turns of wire per centimeter carries a current of 0.100 A. The wire that makes up the solenoid is wrapped around a solid core of silicon steel (Km=5200). (The wire of the solenoid is jacketed with an insulator so that none of the current flows...
  29. P

    Solenoid with a magnetic core problem

    Homework Statement A long solenoid with 70.0 turns of wire per centimeter carries a current of 0.100 A. The wire that makes up the solenoid is wrapped around a solid core of silicon steel (Km=5200). (The wire of the solenoid is jacketed with an insulator so that none of the current flows...
  30. S

    How would a beamed core antimatter drive appear from Earth?

    As I understand it, a beamed core antimatter drive would produce thrust by annihilating matter and antimatter and ejecting the results of the annihliation via a magnetic nozzle. The usable results would be charged pions, which would decay into muons, correct? So my question is, if a...
  31. M

    Why do we use a soft iron core in

    Hello:cool:o! I wanted to know that why do we use a soft iron core in an inductor?
  32. R

    MULTI CORE CPUs to run many programs ?

    the wife does printing grafixs and wants to have several programs open at the same time like photo shop, illustrator, paint and others will a 4 core CPU be better or a faster 2 core CPU be better I have heard that most programs do NOT use more then one core at a time but will each open...
  33. D

    Exploring the Mystery of Iron & Nickel in Earth's Core

    I'm curious as to why there aren't heavier metals in the Earth's core than iron and nickel. Why those two? Anyone have any insight?
  34. G

    Lightning connected with the magnetism of Earth core?

    Thunder in relation to Earth's core. Is there a relation to how the Earth's core revolves and circulates regarding thunder? What if one would track the amount of energy beeing surged and what direction it might seem to be heading, if has a direction? Is there a inderect link between lightning...
  35. Andre

    Surprisingly Rapid Changes In Earth’s Core Discovered

    http://www.sciencedaily.com/releases/2008/06/080619102553.htm One wonders what other effects those rapid changes may have on the Earth mantle, considering heat and mass distribution and ultimately the dynamics of the Earth in total. Could any of the 'not understood' phenomena from the...
  36. U

    How do gas core nuclear reactors work?

    "The Cavradyne engines were based on the assumption of years of research and development, during the 1980s and '90s, of gaseous core nuclear reactors and high-temperature ionized gases. Theory was presumed to have shown that gaseous uranium-235 could be made critical in a cavity reactor only...
  37. L

    Core material selection for high-current DC solenoid

    Hello! This is my first post on Physics Forums. Seems like a good community. I will endeavour to contribute. Over the next few weeks I will have to build a test rig for a fiber-optic sensor I'm developing. The sensor is for high magnetic field strengths, so the test rig must essentially...
  38. M

    Calculating Schwarzschild Radius at Galaxy's Core

    Homework Statement Astronomers have observed a small, massive object at the center of our Milky Way galaxy. A ring of material orbits this massive object; the ring has a diameter of about 15 light years and an orbital speed of about 200 km/s. Take the distance of one light year to be 9.461 X...
  39. C

    Composition of the Earth's core

    I understand that most scientists believe that the Earth's core is composed of iron, nickel and perhaps some other elements such as sulfur and oxygen. I also understand that they believe that the Earth's core formed during a time when the Earth was molten and that the core was formed by heavier...
  40. S

    Capacitor with a conducting core

    A 0.380 m long cylindrical capacitor consists of a solid conducting core with a radius of 1.15 mm and an outer hollow conducting tube with an inner radius of 2.05 mm . The two conductors are separated by air and charged to a potential difference of 6.40 V . Calculate the charge per length for...
  41. E

    From The Suns Core to The Corona?

    Last night I watch a show about the birth of our sun on the Science channel. At one point they talked about how it takes thousands of years for the light in the suns core to travel from the center to the Corona "outer shell", and then only 11 minutes for the light to travel from the Corona to...
  42. K

    Sun formed on a core of a supernova?

    I ran across some article that pointed to this research: http://www.omatumr.com/picpages/snexplo.html The theory states that Sun formed from accretion of supernova remnants back into/onto its core. Now, my scientific background is quite limited but this theory seems to me more realistic...
  43. S

    Determine size of planet's core by distance S-waves travel

    You are visiting a new planet with radius of 5000km. You set up a seismic network and detonate a test chare at the north pole at time T=0. At time T=24minutes your instruments detect S-waves at a latitude of -60 degrees. No S-waves are detected south of -60 degrees. what is the size and...
  44. B

    Who Introduced NCSM and When Was It Introduced?

    Can anyone tell me who introduced the NCSM and what year was it introduced?
  45. S

    What Would it Feel Like to Stand in the Earth's Core?

    What would it feel like to stand in the core of the earth? I was thinking since there would be like pressure coming from one one side, and pressure coming from the other, you would feel skinner. Plus it would be cozy ^^ Although I guess it would be sort of shaky and make you woozy because...
  46. Phrak

    Why Does The Earth's Core Spin

    1 Why does the Earth's core spin in relation to the crust? 2. How quickly are viscous effects slowing it down, if it actually is slowing down? -deCraig
  47. P

    What would happen if Earths core cooled down

    If Earths core cooled down completely what would be the effects on the Formation of Earth? I think that eventually, over millions of years, the enitre surface of the Earth would be covered in water, a huge ocean. There would be no new mountains being formed, and eventually errosion from rain...
  48. O

    Understanding the core idea behind determinants

    I'm really putting some effort into understanding the core idea behind determinants. For a 2x2 matrix, I obviously saw how to derive the formula for the determinant (using AA^-1=I). The question is, how did they define the |A| for higher order matrices? I'm reading a textbook on linear algebra...
  49. marcus

    LQG BH core diameter calculated

    Kevin Vandersloot is an Ashtekar PhD now at Portsmouth UK with a EU Curie fellowship. He and another EU postdoc, C. Boehmer, have been studying the interior of the LQG black hole. As we know, the big bang can be modeled using LQG and it gives no singularity (no place where the model blows up...
  50. Q

    Core Duo vs Core 2 Duo: Is the 1.66 GHz Faster?

    ok here's the deal. i had a computer with a Core Duo T2250 1.73 GHz processor. a replacement computer that a company is sending me is a core 2 duo rated at 1.66 ghz. i told them to find another one because the processor is slower than my old one. but they called me back saying that the 1.66...
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