Seven Touching Cylinders Puzzle

angle

90

cylinder

tube

cyl.

1

<<

<

>

>>

enlarge by

5

10

all

show cyl. no

show 'P' and 'Q'

P =

{-6.30042,0,-1}

Q=

{25.5284,0,-1}

boxed

axes

opacity

radius

reset

It was proven in May 2014 that seven cylinders of same radius can pairwise touch each other (not using the ends of the cylinders) without overlapping.

A few months later a whole range of solutions was found.

This Demonstration "Seven Cylinders Puzzle" allows you to inspect and disassemble this range of solutions.