sphere-sphere intersection : getting the distance between spheres from the given radius of the intersecting...











up vote
0
down vote

favorite












I am looking at the typical sphere-sphere intersection :



enter image description here



http://mathworld.wolfram.com/Sphere-SphereIntersection.html



And I was wondering how to reverse the equation to get the radius of the intersecting circle between two spheres.



enter image description here=
enter image description here



Meaning that, given a radius for the intersection and two radii for the spheres, how to calculate the distance between them?










share|improve this question


























    up vote
    0
    down vote

    favorite












    I am looking at the typical sphere-sphere intersection :



    enter image description here



    http://mathworld.wolfram.com/Sphere-SphereIntersection.html



    And I was wondering how to reverse the equation to get the radius of the intersecting circle between two spheres.



    enter image description here=
    enter image description here



    Meaning that, given a radius for the intersection and two radii for the spheres, how to calculate the distance between them?










    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am looking at the typical sphere-sphere intersection :



      enter image description here



      http://mathworld.wolfram.com/Sphere-SphereIntersection.html



      And I was wondering how to reverse the equation to get the radius of the intersecting circle between two spheres.



      enter image description here=
      enter image description here



      Meaning that, given a radius for the intersection and two radii for the spheres, how to calculate the distance between them?










      share|improve this question













      I am looking at the typical sphere-sphere intersection :



      enter image description here



      http://mathworld.wolfram.com/Sphere-SphereIntersection.html



      And I was wondering how to reverse the equation to get the radius of the intersecting circle between two spheres.



      enter image description here=
      enter image description here



      Meaning that, given a radius for the intersection and two radii for the spheres, how to calculate the distance between them?







      geometry






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 22 at 14:43









      Pierre

      138111




      138111
























          1 Answer
          1






          active

          oldest

          votes

















          up vote
          0
          down vote



          accepted










          Edit: There is no need to reverse that equation.

          Simpler formula (thank you, uncle Pythagoras)



          distance  = Sqrt(R^2-a^2) + Sqrt(r^2-a^2)    





          share|improve this answer























            Your Answer






            StackExchange.ifUsing("editor", function () {
            StackExchange.using("externalEditor", function () {
            StackExchange.using("snippets", function () {
            StackExchange.snippets.init();
            });
            });
            }, "code-snippets");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "1"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53433338%2fsphere-sphere-intersection-getting-the-distance-between-spheres-from-the-given%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            0
            down vote



            accepted










            Edit: There is no need to reverse that equation.

            Simpler formula (thank you, uncle Pythagoras)



            distance  = Sqrt(R^2-a^2) + Sqrt(r^2-a^2)    





            share|improve this answer



























              up vote
              0
              down vote



              accepted










              Edit: There is no need to reverse that equation.

              Simpler formula (thank you, uncle Pythagoras)



              distance  = Sqrt(R^2-a^2) + Sqrt(r^2-a^2)    





              share|improve this answer

























                up vote
                0
                down vote



                accepted







                up vote
                0
                down vote



                accepted






                Edit: There is no need to reverse that equation.

                Simpler formula (thank you, uncle Pythagoras)



                distance  = Sqrt(R^2-a^2) + Sqrt(r^2-a^2)    





                share|improve this answer














                Edit: There is no need to reverse that equation.

                Simpler formula (thank you, uncle Pythagoras)



                distance  = Sqrt(R^2-a^2) + Sqrt(r^2-a^2)    






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 22 at 16:25

























                answered Nov 22 at 15:48









                MBo

                46.5k22848




                46.5k22848






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.





                    Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


                    Please pay close attention to the following guidance:


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53433338%2fsphere-sphere-intersection-getting-the-distance-between-spheres-from-the-given%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    A CLEAN and SIMPLE way to add appendices to Table of Contents and bookmarks

                    Calculate evaluation metrics using cross_val_predict sklearn

                    Insert data from modal to MySQL (multiple modal on website)