[Avodah] electricity on shabbat

[Eli Turkel]

Prof Zev Lev has an article in techumum 4:58 on the use of elevators
on shabbat. The article is a defense on the use of automatic elevators in
disagreement with  R. Halperin.

Most of the article is about the effect of the weight of the passenger
for a descending
elevator which was the crux of thar book of R. Halperin.
Prof. Lev's conclusions is that one can use an automatic elevator if the various
light signals are removed.

In a quick reading I didn't see that either Rabbi Halperin or Prof.
Zev were worried about
sparks but I shall search further.

Also see a summary in
http://www.megavolt.co.il/articles_H/elevator2.html


-- 
Eli Turkel