Cylinder Definition and 65 Discussions

A cylinder (from Greek κύλινδρος – kulindros, "roller", "tumbler") has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. It is the idealized version of a solid physical tin can having lids on top and bottom.
This traditional view is still used in elementary treatments of geometry, but the advanced mathematical viewpoint has shifted to the infinite curvilinear surface and this is how a cylinder is now defined in various modern branches of geometry and topology.
The shift in the basic meaning (solid versus surface) has created some ambiguity with terminology. It is generally hoped that context makes the meaning clear. Both points of view are typically presented and distinguished by referring to solid cylinders and cylindrical surfaces, but in the literature the unadorned term cylinder could refer to either of these or to an even more specialized object, the right circular cylinder.

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  1. Strato Incendus

    Number of Decks on a Rotating Habitat

    My current spaceship design with several ring habitats (6 in my case) works well for worldbuilding purposes, in the sense that the reader should easily be able to tell what types of facilities can be found where on the ship. That’s because the rings distinguish themselves from each other by...
  2. Y

    Is a solid cylinder considered thick or thin?

    I have a solid cylinder of diameter 40mm and length 14mm and I have used plane stress approximations in my calculations so far. I know for to assume a thin walled cylinder/tube the wall thickness needs to be less than 1/20 of tube or cylinder diameter. However, what I have found so far is that...
  3. ezfzx

    Ball rolling within a rolling cylinder

    Cylinders rolling down inclines are a common demo. But how do you model the movement of a sphere rolling within a rolling cylinder? I teaching a physics class and this question came up and my dynamics math is a little rusty. But I haven't found anything like this in any book or online. There's...
  4. S

    Calculate the Pressure that Shrink film exerts on a cylinder

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  5. C

    Calculate Pressure vessel Collapse Pressure

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  6. S

    B Solid angle by placing one disk on a cylinder

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  7. olgerm

    Angular speed that breaks a spinning body apart with inertial stress

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    • angula velocity cylinder spinning stress
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  8. raclemai

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  9. Adgorn

    Spivak: Conic Sections appendix, problem 1

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  10. J

    Air resistance: cylindrical rotor in stator with air gap

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  11. A

    Finding the relationship between magnetic momentum and angular momentum

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  12. Suyash Singh

    Falling solid cylinder with string

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  13. H

    Cylinder in 3 D

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  14. R

    Logic applied to making isothermal assumption

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  15. F

    Magnetic field outside a conducting hollow cylinder

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  16. A

    Pascal's Law Problems

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  17. M

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  18. T

    Phases of hydrocarbons in a compressed gas cylinder

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    • cylinder gas hydrocarbon phase
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  19. B

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  20. O

    Period of Oscillation of a Cylinder Attached to Two Springs

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  21. R

    Drive Shaft stress

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    • cylinder mechancal engineering torque
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  22. Const@ntine

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  23. Joacim Jacobsen

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  24. Jehanzeb

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  25. JohnS-I

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  26. E

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  27. S

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  28. S

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  29. franktherabbit

    Determining the capacitance of the two conductors

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  30. R

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  31. Z

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  32. Blockade

    Finding the voltage at a radius of a cylinder

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  33. D

    Temperature in the regulator valve of a cylinder

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  34. M

    Heat Transfer Coefficients: Free and Forced Convection

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  35. 1

    What does divergence of electric field = 0 mean?

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  36. A

    A Project img on X-Y surface to a cylinder placed in center....

    Hi , I came across a problem ,I've search a lot but couldn't exactly find the solution. here is my problem: suppose there is an image ( I call it IMG_A),place IMG_A in the X-Y plane , put a mirror cylinder at the center of IMG_A. what we see in the cylinder mirror is a deform image (I call it...
  37. M

    Falling chain on a cylinder

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  38. J

    Volume of a cylinder and radius

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  39. (Ron)^2=-1

    Rolling without slipping over a plank

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  40. O

    Using a hot gas to drive a piston: entropy reduction?

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    • omoplata
    • Thread
    • cylinder entropy piston second law of thermodyanmics
    • Replies: 1
    • Forum: Thermodynamics
  41. R

    Cylinder filled with water deflection study

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  42. R

    Confussion with setting up loading conditions on cylinder

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  43. S

    3D object represent with primitive shapes

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  44. Rectifier

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  45. D

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  46. T

    Cylinder Pressure of Combustion Engine

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  47. A

    Straight engine vs flat engine on a 1 cyl. motorcycle

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  48. W

    Force of a bar to stop a rotating cylinder

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  49. Absentee

    Heat of friction in cylinder-piston

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  50. A

    Continuity and Bernoulli's equation in air

    Hi, I'm trying to understand vortex shedding and how the Karman vortex street occurs when air flows around a cylindrical object, so far it's going OK but then I came across this part of the explanation which leaves me confused: "Looking at the figure above, the formation of the separation...
    • andrew700andrew
    • Thread
    • bernoulli's equation continuity cylinder vortex shedding
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    • Forum: Mechanics
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