Halachic responsum on issues of electricity and newly used sensors, sent by the pillar of ruling, Maran the ‘Shevet Halevi’ to the Gaon Rabbi Levi Yitzchak Halpern, head of the Technology and Halacha Institute. 1999.
The responsum, spread over two pages, is relatively long for a responsum from his later years, and shows the immense power of the ‘Shevet Halevi’, not just in his immense knowledge of Torah, not only n his immense and world-famous power to rule, but also in his immense familiarity in the current facets of life and technology, such as electronic sensors and various other modern technological innovations in daily life.
Please see the Hebrew listing for biographical information on Maran the ‘Shevet Halevi’.
[1] official, late-period letterhead of Maran the ‘Shevet Halevi’. Handwritten and signed by him. Written on both sides – total of [2] handwritten pp. Filing holes with fdamage to a few words. Fold marks. Good-very good condition.