{"book":"adl0568","page":225,"text":"(١٦)\nدران پیدا شده تکه آهن را اینه جذب می نماید\n(۲) و نیز چون قطبین بطاریه را در چراغ برقی\nالحاق دادیم چراغ مذکور مشتعل میشود\n(۳) و در زنگی که بذریعه اثر مقناطیسی زنک میزند\nچون سیمهای بطاریه را پیوسته میکنیم این زنک بزنگ\nزدن شروع میکند .\nازین تجارب ظاهر شد که از جریان برق تأثیرات\nذیل حاصل میشود :\n(۱) آثار نور (۲) آثار حرارت (۳) آثار\nمیکانیکی ( جر اثقال ) (٤) آثار مقناطیسی ( ٥ )\nآواز ( ٦ ) عمل افعال الاعضا از هر يك اين فوائد\nزیادی حاصل کرده اند چنانچه ازا ثار حرارت برق برای\nدر دادن نقبها وعملیات جراحی ازین کار میگیرند و برای\nسوختاندن بعضی زخمها همچون چاقوی تیز کار میدهد و برای\nمشتعل ساختن چراغهای برقی نیز همین تأثیر مستعمل است:\nبزرگترین فوائدی که از علم برق گرفته شده است\nهمانا تیلیگراف است که در حقیقت بجهت انتقال خیالات\nمسافات را معدوم مینماید فوائد لانتہائیکه از این علم","chars":780,"image":"https://storage.googleapis.com/adl-page-images/adl0568/00225.jpg","first_page":1,"last_page":597,"title":"Muʻarrif-i maʻārif معرف معارف","permalink":"https://afghanpress.org/book/adl0568/225","canvas":"https://afghanpress.org/iiif/adl0568/canvas/225","source":"https://afghanistandl.nyu.edu/books/adl0568/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0568_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}