Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site utcsrgv.UUCP Path: utzoo!utcsrgv!dave From: dave@utcsrgv.UUCP (Dave Sherman) Newsgroups: net.religion.jewish Subject: Telephones for Shabbos Message-ID: <3643@utcsrgv.UUCP> Date: Wed, 28-Mar-84 21:16:37 EST Article-I.D.: utcsrgv.3643 Posted: Wed Mar 28 21:16:37 1984 Date-Received: Wed, 28-Mar-84 21:37:44 EST Organization: The Law Society of Upper Canada, Toronto Lines: 31 Well, you learn something new every day: From allegra!hou2a!zev Wed Mar 28 17:44:15 1984 in regard to your posting re: lew mammel's questions about eruv ( i think it was him, anyway ), you mentioned that you had never heard of a special kind of phone that uses randomness to get around the issur of lighting a fire. as far as i know, the institute for science and halacha in israel ( i think it is in jerusalem, and i am not sure about the name of the organization) has invented such a device. so far as i know, it is not intended for general use, but only for things like an emergency connection to medical services, etc. i guess it is intended to fill in the gray areas between non-emergencies and life-threatening situations. a switch based on similar principles is intended as a hospital call button. write if you have any questions. you may post this if you wish. zev farkas hou2a!zev 201 949 3821 Interesting. I have heard about an ink for doctors to write prescriptions on Shabbos. It disappears after a couple of days and can't be brought back, so it's strictly speaking no k'sivah. Dave Sherman Toronto -- {allegra,cornell,decvax,ihnp4,linus,utzoo}!utcsrgv!dave