{"book":"adl0933","page":121,"text":"۱۱۴\n\n۷۶ سانتیمتر ارتفاع داشته باشد\nاین فشار در یک محل نیز تغییراتی حاصل میکند که مربوط است بتغییرات درجهٔ حرارت\nهوای محیط یا رطوبت آن\n۳ - میزان الهواء - تغییرات فشار هوا را بوسیلهٔ اسبابی که موسوم است بمیزان\nالهوا معین میکنند\nمیزان الهواء اقسام متعدد دارد ولی ما در اینجا فقط از میزان الهواء طشتک دار\nصحبت میکنیم که از همه اقسام ساده تر و اولین\nمیزان الهوائی است که اختراع شده\nلولهٔ این میزان الهواء چنانچه در تجربهٔ\nتریسلی دیدیم روی طشتکی قرار گرفته در طول\nآن تقسیماتی است بحسب سانتیمتر یات\nو معمولاً آنرا روی تختهٔ مینمایند\nاز برای شناختن فشار هوا کافی است عدهٔ تقسیماتی که مابین دو سطح جیوه است\nخواند یعنی سطح جیوهٔ طشتک و جیوهٔ لوله\n\nمیزان الهواء\n\n۳ . میزان الهواء را شرح دهید ؟","chars":682,"image":"https://storage.googleapis.com/adl-page-images/adl0933/00121.jpg","first_page":1,"last_page":163,"title":"ʻIlm al-ashyā : bar̄-yi jamāʻat-i sāl-i panjum va shishum makātib-i ibtidāʻi علم الاشىا : برى جماعت سال پنجم و ششم مکاتب ابتداع","permalink":"https://afghanpress.org/book/adl0933/121","canvas":"https://afghanpress.org/iiif/adl0933/canvas/121","source":"https://afghanistandl.nyu.edu/books/adl0933/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0933_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."}}