作者: L. Terry Boatman , Stephen P. Lindblade
DOI:
关键词: Physics 、 Center (algebra and category theory) 、 Geometry 、 Chain (algebraic topology) 、 Dual axis 、 Optics 、 Perpendicular
摘要: A chain support 11, hinged on two perpendicular axes 5, 6 which allows movement in planes. The provides an improved arrangement to allow 4 be pulled through the center of apparatus a desired length after is removably secured support.