وحدة القياس في الخط العربي وبعدها الروحي والجمالي: خط الثلث الجلي أنموذجا

الملخص EN

The writing and the Arabic calligraphy appeared and developed in cultural centers in the north of the Arabian peninsula, and was spread by the Arabs of the Hijaz through trade, after the revelation came down and the migrations of Muslims to medina, and since the used of writing in the codification of revelation, it flourished, and the writers competes in its recitation from east to west wherever the Islam spreads.

where it knew many developments in form and function thanks to a group of writers who joined forces since the umayyad era, the Abbasid until the leadership of the ottoman family where each of them participate to adapt and soften dry writing.

in accordance with divine revelation, and then laying down rules for controlling the proportions of letters depending on the basis of the circle by the Abassid calligrapher Ibn Muqla.

it is no doubt that the development of the arab calligraphy was the discovery of unit of measurement with a spiritual and aesthetic dimension, and then the square point of the measurement of letters and their dimensions, which became an integral part of writing in general, and the one third (thuluth) Jali calligraphy in particular.