_____ number is the ratio between inertia and viscous forces.

• A. Lamina‚Äö√Ñ√∂‚àö√ë‚àö¬•s
• B. Parker‚Äö√Ñ√∂‚àö√ë‚àö¬•s
• C. Macadam‚Äö√Ñ√∂‚àö√ë‚àö¬•s
• D. Reynold‚Äö√Ñ√∂‚àö√ë‚àö¬•s