Principle of dimensional homogeneity (Only like dimensions add; '=' balances dimensions.)
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Only like dimensions add; '=' balances dimensions.
What each symbol means
| Symbol | What it stands for |
|---|---|
| Term | Each +/− separated piece |
| Equation | Physically valid relation |
When to use this
Multiplicative constants may carry dimensions unless dimensionless; exponents must be dimensionless numbers.