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The equality between the first dimensionless group of the prototype and that of the model is called the prediction equation because it is used to recover the quantity of interest once the other groups have been matched. The lecturer states that the left-hand-side parameter appears only in $\Pi_1$.

Conditions: Used after the corresponding similarity requirements are imposed.; The lecturer states that the left-hand-side parameter appears only in $\Pi_1$.; Applies to the prototype and model flow problems shown on the board.

The equality between the first dimensionless group of the prototype and that of the model is called the prediction equation because it is used to recover the quantity of interest once the other groups have been matched. The lecturer states that the left-hand-side parameter appears only in $\Pi_1$.

Conditions: Used after the corresponding similarity requirements are imposed.; The lecturer states that the left-hand-side parameter appears only in $\Pi_1$.; Applies to the prototype and model flow problems shown on the board.