Epispiral

Epispiral

The epispiral is a plane curve with polar equation : r=a sec{n heta}.There are "n" sections if "n" is odd and 2"n" if "n" is even.

It is the polar or circle inversion of the rose curve.

References

*


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Newton's theorem of revolving orbits — Figure 1: An attractive force F(r) causes the blue planet to move on the cyan circle. The green planet moves three times faster and thus requires a stronger centripetal force, which is supplied by adding an attractive inverse cube force. The …   Wikipedia

  • List of curves — This is a list of curves, by Wikipedia page. See also list of curve topics, list of surfaces, Riemann surface. Algebraic curves*Cubic plane curve *Quartic plane curve *Quintic plane curve *Sextic plane curveRational curves*Ampersand curve… …   Wikipedia

  • List of mathematics articles (E) — NOTOC E E₇ E (mathematical constant) E function E₈ lattice E₈ manifold E∞ operad E7½ E8 investigation tool Earley parser Early stopping Earnshaw s theorem Earth mover s distance East Journal on Approximations Eastern Arabic numerals Easton s… …   Wikipedia

  • Cotes' spiral — In physics and in the mathematics of plane curves, Cotes spiral is a spiral that is typically written in one of three forms:frac{1}{r} = A cosleft( k heta + varepsilon ight):frac{1}{r} = A coshleft( k heta + varepsilon ight) :frac{1}{r} = A heta… …   Wikipedia

  • Cotes's spiral — In physics and in the mathematics of plane curves, Cotes s spiral (also written Cotes spiral and Cotes spiral) is a spiral that is typically written in one of three forms where r and θ are the radius and azimuthal angle in a polar coordinate sy …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”