Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!nrl-cmf!mailrus!tut.cis.ohio-state.edu!rutgers!gatech!udel!udccvax1!anand From: anand@vax1.acs.udel.EDU (Anand Iyengar) Newsgroups: sci.electronics Subject: Re: WHat are those holes for? Message-ID: <1649@udccvax1.acs.udel.EDU> Date: 19 Jul 88 17:23:14 GMT References: <10790@oberon.USC.EDU> <327@richp1.UUCP> <303@btree.uucp> Reply-To: anand@vax1.acs.udel.EDU (Anand Iyengar) Organization: The Lab Rats Lines: 7 In article <303@btree.uucp> rfarris@btree.UCSD.EDU (rick farris) writes: >Yes, and why the heck are manholes round? So that they can't fall into man-holes. Think about it: putting a disk through a (non-deformable) circular openning of smaller diameter... Square cover's, on the other hand, can be turned vertical and rotated 45 degrees and dropped into the corresponding openning (rectangles, similarly). Anand.