הַבְּרִיחַ הַתִּיכוֹן

ביטוי (אנגלית)

The Middle Ages

הגדרה (אנגלית)

In the question: the calculated cell. The calculated part in the process (the average of the actual hearing).

("And he made the middle bolt to go through the boards from end to end" - Shemot Lo 33, Description of the Construction of the Tabernacle)