Keyword | CPC | PCC | Volume | Score | Length of keyword |
---|---|---|---|---|---|

curvature | 1.55 | 0.8 | 9499 | 26 | 9 |

Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|

curvature | 0.33 | 0.9 | 9747 | 13 |

curvature of the spine | 1.34 | 0.4 | 8775 | 54 |

curvature formula | 1.37 | 1 | 8253 | 58 |

curvature calculator | 0.42 | 0.8 | 186 | 34 |

curvature of the earth | 1.35 | 1 | 1368 | 40 |

curvature meaning | 1.44 | 0.1 | 813 | 63 |

curvature movie | 0.76 | 0.1 | 5802 | 78 |

curvature acquired | 0.26 | 0.3 | 2697 | 51 |

curvature tool illustrator | 1.18 | 1 | 2889 | 69 |

curvature equation | 1.92 | 0.2 | 8726 | 93 |

curvature radius | 1.47 | 0.2 | 5879 | 48 |

curvature calculator calc 3 | 1.94 | 0.5 | 9351 | 4 |

curvature of spacetime | 0.27 | 0.8 | 8684 | 91 |

curvature of the spine in adults | 0.84 | 0.3 | 8625 | 30 |

curvature of earth per mile | 0.53 | 0.6 | 4655 | 10 |

curvature risk | 0.52 | 0.2 | 7703 | 6 |

curvature matlab | 1.01 | 0.6 | 1802 | 70 |

curvature drift | 1.94 | 1 | 5624 | 85 |

curvature 中文 | 0.64 | 0.1 | 2391 | 62 |

curvature 意味 | 0.98 | 0.7 | 9681 | 88 |

The radius of curvature at a point on a curve is, loosely speaking, the radius of a circle which fits the curve most snugly at that point. The curvature, denoted , is one divided by the radius of curvature. In formulas, curvature is defined as the magnitude of the derivative of a unit tangent vector function with respect to arc length:

Normal curvature Given a regular surface and a curve within that surface, the normal curvature at a point is the amount of the curve's curvature in the direction of the surface normal. The curve on the surface passes through a point , with tangent , curvature and normal .Given the surface normal , the normal curvature is the length of the projection of onto , namely .

the curve. Thus the curvature k at a point (x,y) on the curve is deﬁned as the derivative k = dφ ds = dφ dt dt ds, where we have used the chain rule in the last equality. To compute the curvature from (x(t),y(t)) we note that tanφ(t) = y˙(t) x˙(t). Diﬀerentiating both sides of this equation implicitly with respect to t we ﬁnd sec2 φ dφ dt = d dt y˙ x˙ =