Dear Mohamed El Mahdi,

""Q" is derived from the French word "Quantité" which means "Amount" or Quantity. It was introduced by the French at the time when they dominated science (between the 18th century and the 19th century, ie. Darcy's law 1856, Poiseuille's law, 1840). The French word derives from Latin " Quantitas ".

With my best regards

Prof. Bachir ACHOUR

Dischage means volume rate of flow. So volume means the quantity of fluid.hence the first letter of quantity Q is used for discharge

Q represents quantity. The volume rate of flow is discharge.

Dear Mohamed El Mahdi,

""Q" is derived from the French word "Quantité" which means "Amount" or Quantity. It was introduced by the French at the time when they dominated science (between the 18th century and the 19th century, ie. Darcy's law 1856, Poiseuille's law, 1840). The French word derives from Latin " Quantitas ".

With my best regards

Prof. Bachir ACHOUR

Dear Sangamreddi

Dear Bachir

thank you for those useful informations. it's clearer now.

Thanks Dr. Bachir for the useful informations

Thank you Dr. Bachir for the nice explanation and information.

I think that Q represents Quantity

Prof. Bachir ACHOUR has rightly explained - useful information. Thanks and regards

Prof. Bachir has explained clearly.

Thanks and regards

I was also not aware about it but Prof. Bachir explanation is notable. Thanks Prof.